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Air Canada announced a temporary pause on a handful of routes departing from Toronto and Montreal to New York’s John F. Kennedy airport, attributing the decision to sharply rising jet‑fuel costs. The suspension comes as airlines worldwide grapple with fuel price spikes triggered by the ongoing US‑Israel war with Iran. Although the Strait of Hormuz reopened earlier this month, easing some oil‑price pressure, jet‑fuel costs remain markedly higher than before the conflict. In a related development, Spirit Airlines has appealed to the U.S. government for emergency financing worth hundreds of millions of dollars to mitigate its own fuel‑price surge, according to industry source reports. Air Canada explained that jet‑fuel prices have doubled since the start of the Iran conflict, rendering several lower‑margin routes financially untenable. The carrier said it is implementing “schedule adjustments, including frequency reductions,” to preserve overall network viability. Effective June 1, the airline will halt one Montreal‑to‑New York flight and three Toronto‑to‑New York flights, with service slated to resume on October 25. Additional temporary suspensions include the Salt Lake City‑Toronto corridor, which will be paused from June 30 and is not expected to return until 2027, as well as a postponed launch of a Guadalajara‑to‑Montreal service. Air Canada estimates the changes will impact about 1 % of its total passenger‑carrying capacity. Affected passengers will be offered alternative travel options, with the airline continuing to operate to LaGuardia and Newark airports 34 times daily across six Canadian cities. The move mirrors broader industry pressures: British low‑cost carrier easyJet projects a pre‑tax loss of £540‑£560 million for the six‑month period ending March, while Australian airlines Qantas and Virgin Australia have announced fare hikes and reduced flight frequencies. Moreover, the International Energy Agency warned that Europe possesses only six weeks of jet‑fuel reserves, raising concerns that further supply disruptions could trigger additional flight cancellations.

New research indicates that individuals carrying the red‑hair allele have been evolutionary winners in Europe for more than 10,000 years. The study, led by Harvard scientists, examined DNA from nearly 16,000 ancient remains and over 6,000 living Europeans, providing robust proof that human biology continues to evolve long after farming began. Researchers identified 479 genetic variants that show clear signs of positive selection. Among these are genes linked to red hair and fair skin, as well as variants that affect susceptibility to coeliac disease, diabetes risk, baldness and rheumatoid arthritis. The authors suggest that the advantage of red hair may stem from its association with lighter skin, which enhances vitamin D synthesis in low‑sunlight environments—a crucial benefit for early European farmers. Prior to this work, only about 21 traits had been documented as having risen through natural selection, such as lactase persistence. The scarcity of earlier examples had led some to argue that directional selection was rare after modern humans left Africa. By leveraging an unprecedented volume of ancient genomic data and advanced computational methods, the team demonstrated that selection pressures intensified during the transition from hunter‑gatherer societies to agricultural ones, reshaping hundreds of genes across West Eurasia. "With these new techniques and the sheer scale of ancient DNA, we can now observe how selection sculpted our biology in near real‑time," said Dr. Ali Akbari, the study’s first author. Beyond vitamin D, the rise of certain disease‑related alleles poses intriguing puzzles. A mutation that heightens the risk of coeliac disease emerged around 4,000 years ago and has steadily increased, implying that carriers may have enjoyed other survival advantages despite the autoimmune threat. Similarly, the immune‑regulating gene TYK2, which markedly raises tuberculosis susceptibility, grew in frequency between 9,000 and 3,000 years ago before declining, hinting at a complex balance between pathogen defense and disease risk. The analysis also uncovered negative selection against genetic profiles that promote a high body‑fat percentage, supporting the classic “thrifty genes” hypothesis: traits advantageous for storing energy during scarce hunter‑gatherer periods became detrimental once agriculture ensured a steadier food supply. "This work lets us assign both place and time to the forces that have shaped us," noted Prof. David Reich, senior author and Harvard Medical School geneticist. While the findings are confined to West Eurasian populations, they raise broader questions about whether similar evolutionary dynamics occurred elsewhere. The full study appears in Nature.

Budget airline easyJet has issued a profit warning, citing the impact of the Iran conflict on fuel prices and bookings. The airline has seen fuel costs rise by £25m in the last month alone, driven by the escalating tensions in the Middle East.EasyJet expects to report an increased pre-tax loss of £540-£560m for the six months to March, up from £394m in the first half of 2024-25. The carrier typically generates most of its revenue in the second half of the year, which includes the peak summer period.The airline has hedged 70% of its fuel needs for the rest of the financial year to September, but each $100 movement in the spot price of jet fuel per metric tonne adds £40m in costs for its unhedged supply. Currently, the price is about $800 higher than before the conflict started.Chief executive Kenton Jarvis said demand remained strong in the short term, but customers were leaving it later to book due to economic uncertainty. However, he assured that fuel supplies remained normal and that any talk of having to cancel flights was pure speculation.Jarvis added that there was continued positive demand, but easyJet's financial performance had worsened year on year, impacted by the conflict in the Middle East and the competitive environment in some markets. Shares fell 3% in early trading.

Europe is projected to run out of jet fuel in about six weeks, according to the head of the International Energy Agency, raising the spectre of widespread flight cancellations.Fatih Birol told the Associated Press that without a rapid restoration of oil shipments from the Middle East, airlines could soon be forced to drop routes, warning that “some flights from city A to city B might be cancelled as a result of lack of jet fuel.”The shortage stems from the US‑Israel war on Iran, which has snarled global energy markets since the initial strikes in late February. In retaliation, Iran has effectively sealed the Strait of Hormuz, a critical artery for Gulf oil exports.Although a two‑week ceasefire was recently brokered, negotiations to end the hostilities have stalled, leaving the supply disruption unresolved.Meanwhile, Brent crude futures are trading more than 30% above pre‑war levels, intensifying pressure on fuel prices and adding to political scrutiny in the United States.Jet‑fuel shipments that departed before the conflict have largely arrived in Europe, but the remaining reserves are rapidly being drawn down, leaving the continent vulnerable.Airports Council International Europe has warned EU energy and transport commissioners that the region could face fuel shortages within three weeks, echoing industry norms that typically maintain about six weeks of fuel on hand.Birol warned that the situation represents a “dire strait” with serious ramifications for the global economy, noting that prolonged disruption would exacerbate inflation and dampen growth worldwide.The anticipated fallout includes higher petrol, gas and electricity prices, with the impact expected to be uneven across different regions.Airlines are already scrapping marginally profitable routes, especially those without robust hedging strategies, and even carriers with hedged fuel costs may need to reconsider schedules.Despite the broader concerns, British low‑cost carrier easyJet asserted it has sufficient fuel visibility through mid‑May and does not anticipate supply‑related issues in the near term.

The United States is set to move **over 10,000 additional service members** into the Middle East before the end of April, according to officials speaking anonymously to The Washington Post. The reinforcement is intended to heighten pressure on Iran while the current cease‑fire, declared a week ago, remains in force until April 22. Approximately 6,000 troops will embark aboard the USS George H.W. Bush carrier and its escort vessels, which are transiting around Africa to join the existing carrier presence. An additional 4,200 personnel from the Boxer Amphibious Ready Group and the 11th Marine Expeditionary Unit are expected to arrive later in the month. These deployments bring the total number of U.S. forces engaged in the conflict since its start on February 28 to roughly 50,000 troops. With the arrival of the George H.W. Bush, the region will host three U.S. carriers: the newly arrived vessel, the USS Abraham Lincoln, and the USS Gerald Ford, all of which have already taken part in combat operations against Iran. Concurrently, U.S. Central Command (CENTCOM) announced on social media that its naval blockade of Iranian maritime trade is "fully implemented" and that American forces have "completely halted economic trade" to and from Iran by sea. However, maritime‑tracking data released on Tuesday showed several ships departing Iranian ports and navigating the Strait of Hormuz, suggesting the blockade’s effectiveness may be limited. Amid the military buildup, diplomatic channels remain active. President Donald Trump told The New York Post that a new round of negotiations with Iran could be convened in Pakistan within two days, following a marathon session in Islamabad that ended without a breakthrough. The previous high‑stakes talks failed to secure a lasting peace agreement, and the cease‑fire is slated to expire on April 22. According to the Washington Post sources, the fresh troop influx is designed to give the U.S. administration leverage in ongoing talks while preserving the option for "additional strikes or ground operations" if negotiations falter. This dual strategy underscores Washington’s intent to maintain both diplomatic and kinetic pressure on Tehran as the regional conflict evolves.

United Airlines CEO Scott Kirby reportedly pitched a merger with American Airlines to US President Donald Trump in late February, according to sources. This potential deal would combine the world's two largest carriers by available capacity, significantly impacting the global air travel industry.The proposed merger would be the largest consolidation move in the airline industry in at least a decade, combining the 'big four' US carriers – United, American, Delta, and Southwest – into the 'big three'. Collectively, these airlines already control 74% of passenger capacity in the US market.Shares in United rose 3.9% and American climbed 9.3% during early trading in New York on Tuesday following the report. However, critics warn that the deal would likely face intense opposition from unions, rival airlines, lawmakers, and airports due to concerns around overlapping routes and job losses.Experts also caution that a merger would have a detrimental impact on passengers, leading to fewer choices, higher ticket prices, and more fees. Ganesh Sitaraman, director of the Vanderbilt Policy Accelerator, described the potential merger as 'an absolute disaster for the flying public'.William McGee, a senior fellow for aviation and travel at the American Economic Liberties Project, called the proposed deal 'undoubtedly the most absurd airline merger I've ever heard about'. He emphasized that a single US carrier controlling nearly 40% of the market would be unprecedented and harmful to consumers.Despite these concerns, some stakeholders, such as Capt. Dennis Tajer, spokesperson for the Allied Pilots Association, approached the report with an open mind, highlighting American Airlines' financial and operational challenges under current management.

Qantas announced a fare increase and a 5% reduction in domestic capacity for May and June, responding to a rapid shift in passenger demand away from airlines that transit the conflict‑ridden Middle East. In a market update released on Tuesday, the carrier said it is redeploying aircraft from its U.S. and domestic networks to capture strong interest in Europe‑bound travel, especially to Paris and Rome. The move follows service cuts by Persian Gulf carriers such as Emirates, Etihad and Qatar Airways, which have scaled back flights amid the escalating Iran conflict. To accommodate the new focus, Qantas and its low‑cost arm Jetstar will cut capacity across their domestic networks by about 5%, trimming frequencies on key inter‑city routes and suspending several regional services. Four temporary suspensions will take effect in mid‑May: Melbourne‑Hamilton Island, Melbourne‑Coffs Harbour, Sydney‑Busselton and Darwin‑Gold Coast. In addition, the Adelaide‑Mount Gambier route will be discontinued indefinitely due to low demand and soaring fuel costs. The airline warned that its jet‑fuel expenses are set to rise sharply, projecting a second‑half 2026 fuel bill of $3.1‑$3.3 billion, up from the previously forecast $2.2 billion. This surge is driven by higher oil prices linked to the Iran conflict. To offset the cost pressure, Qantas has already raised ticket prices and signalled that “further action” – likely additional fare hikes – may be necessary. While airlines typically use hedging contracts to lock in fuel prices, the current volatility limits the effectiveness of such safeguards. Following the market update, Qantas shares slipped more than 3% in early trading before stabilising, reflecting investor concern over the combined impact of higher fares, reduced domestic capacity, and elevated fuel costs.

President Donald Trump has signaled that the U.S. Navy will enforce a blockade of the Strait of Hormuz, targeting any vessel that has paid a toll to Iran. The announcement sent oil futures soaring past $100 per barrel on Monday, reviving fears of a deeper global energy crisis. U.S. Central Command later clarified that the operation would focus on ships entering or leaving Iranian ports, a narrower scope than the initial threat to shut the entire strait. Nonetheless, experts say the move would still choke a critical chokepoint in world oil supply. "Anything that removes oil from the market pushes prices higher, which in turn lifts gasoline costs," explained Trita Parsi, co‑founder of the Quincy Institute. He warned that if Iran’s allies, notably the Houthis in Yemen, retaliate by closing the Bab al‑Mandeb strait, oil could surge above $150 a barrel. Bab al‑Mandeb serves as an alternative route for Gulf oil to reach the Red Sea and Indian Ocean. Its closure would compound the disruption already caused by the Hormuz threat. Since the start of the U.S.–Israeli conflict on February 28, Iran has limited traffic through Hormuz, allowing only a handful of vetted ships. Windward estimates that about 3,200 vessels were stranded west of the strait as of Saturday. Former chief economist Anas Alhajji of NGP Energy Capital Management expects non‑Iranian carriers to avoid the strait regardless of U.S. assurances, citing rising insurance premiums and the risk of Iranian retaliation. "The Trump blockade of Iranian ports is effectively a blockade of the Hormuz Strait," he told Al Jazeera. The ripple effects extend beyond fuel. Higher oil and gas prices will lift the cost of chemicals, fertilizers and plastics feedstocks, analysts say. Cameron Johnson, senior partner at Tidalwave Solutions, predicts a rapid increase in raw‑material prices if the blockade persists into late April or early May. "The wild card is the timeframe," Johnson noted. "If it’s a short‑term negotiating tactic, the market may absorb it, but a prolonged blockade will spike global commodity prices." Supply‑chain experts warn of broader repercussions. Deborah Elms of the Hinrich Foundation highlighted that rising fabric costs and packaging shortages could strain food production and consumer goods later in the year. Industry observer Chad Norville of Rigzone said the mere threat erodes confidence in the strait’s stability, likely driving up insurance costs and reducing daily trade volumes. In sum, a U.S. blockade of Iranian ports would mark a stark reversal of recent policy, which had briefly eased sanctions to alleviate the energy crunch. The potential escalation underscores how geopolitical moves can quickly translate into higher energy bills and broader economic strain worldwide.

Three Very Large Crude Carriers (VLCCs) successfully navigated the Strait of Hormuz on Saturday, marking a rare movement of oil cargoes amid the fragile truce between the United States and Iran.The vessels – the Liberia‑flagged Serifos, and the China‑flagged Cospearl Lake and He Rong Hai – each can transport about 2 million barrels of crude, collectively representing a significant volume for a waterway that channels roughly 20% of the world’s oil and LNG shipments.According to data from the London Stock Exchange Group (LSEG) and analytics firm Kpler, the Serifos is chartered by Thailand’s state‑owned energy firm PTT. Loaded with Saudi and UAE crude in early March, it is slated to dock at Malaysia’s Malacca Port on April 21.The other two carriers, Cospearl Lake and He Rong Hai, are chartered by Unipec, the trading arm of Chinese energy giant Sinopec. Cospearl Lake, carrying Iraqi oil, is expected to reach China’s Zhoushan port on May 1, while the destination for He Rong Hai remains undisclosed.Earlier, a tanker named Ocean Thunder, chartered by a Petronas subsidiary, also transited the strait, underscoring a gradual, albeit limited, resumption of traffic.Despite these movements, hundreds of tankers remain stranded in the Gulf, awaiting clearance during the two‑week ceasefire. Their prolonged idling continues to pressure global energy prices, which have surged since Iran’s blockade began in late February.In addition to the loaded vessels, three empty tankers – Mombasa B, Agios Fanourios I, and Shalamar – were observed heading into the strait on Sunday to load fresh cargoes. Notably, Agios Fanourios I signaled a route to Iraq’s Basrah fields to pick up crude destined for Vietnam.Management firms such as Eastern Mediterranean Maritime, Cmb.Tech NV, and Pakistan National Shipping have not provided comments on the recent transits.While the passage of these three supertankers offers a modest relief to the global oil supply chain, the overall situation remains precarious. The continuation of the ceasefire and the resolution of Iran’s blockade will be critical determinants of oil market stability in the weeks ahead.