World
Catastrophic flash floods along the Nepal-Tibet border have killed at least 540 people, with hundreds more still missing. A wall of water swept through mountain valleys after days of heavy rain, destroying entire villages and trapping workers inside hydropower tunnels. Rescue teams are digging through mud and debris while helicopters search remote valleys. Scientists say a glacier collapse helped feed the flood, making it one of the worst natural disasters in Nepal's recent history. The disaster has also raised hard questions about fast-growing hydropower projects built in some of the world's most hazard-prone terrain. International aid groups are rushing food and supplies to displaced families, and officials warn the death toll could keep climbing.
BBC News
Politics
President Trump has signed an executive order renaming Lake Ontario as 'Lake America', drawing immediate pushback from lawmakers and state officials. House Democrats introduced legislation to reverse the order, arguing the president has no authority to unilaterally rename a body of water shared with Canada. New York officials say they will ignore the new name in state documents. The order is part of a broader pattern of renaming moves that have stirred controversy this year. Legal experts note that Congress controls official federal naming through the U.S. Board on Geographic Names, leaving the order on shaky legal ground. The dispute now heads to Congress and the courts, with both sides digging in.
POLITICO
Business
The Trump administration is imposing a minimum import price for polysilicon, a raw material used in semiconductors and solar panels, along with new tariffs on products made with it. Officials say the measures aim to protect American manufacturers from cheap imports, but industry analysts warn they could raise costs across electronics and clean energy supply chains. Polysilicon prices have been volatile for years, and the move adds fresh uncertainty for chipmakers, solar developers, and the data center boom driving demand for advanced electronics. Domestic producers welcome the protection, while electronics and solar companies warn the policy will push up input costs. The first duties are expected to take effect within months, and companies are already reviewing supply contracts.
The New York Times
Technology
Shares of Unitree Robotics, the Chinese company known for backflipping humanoid robots, closed up 460% in their market debut on Wednesday. The blockbuster listing caps a year in which Chinese robotics firms have drawn intense global attention and heavy investment. Unitree's robots have starred in viral videos, and the company is now pushing into industrial and consumer markets. The debut comes as Beijing and Washington compete for leadership in advanced technology, with Washington moving to restrict some chip exports. Analysts say the listing shows investor hunger for AI hardware plays, even as they warn that valuations may have run ahead of profits. Unitree now faces the challenge of turning hype into steady revenue.
NBC News
Science
NASA has launched a powerful new space telescope on a multi-year mission to study dark energy and dark matter. Scientists call the mission a giant leap forward in understanding why the universe is expanding faster and faster. The telescope will map galaxies and measure how light bends across cosmic distances, building a new picture of the hidden forces that shape the cosmos. The launch went smoothly, and engineers are now checking the instruments. The first scientific results are expected within months, but the full survey will take years. The mission is designed to answer one of the biggest open questions in physics: what is the universe mostly made of? The data it returns could reshape textbooks and guide astronomy for the next generation.
BBC News
Sports
The US Open kicked off with a field that feels genuinely open for the first time in years. World No. 1 Jannik Sinner is out of the tournament, while Carlos Alcaraz has just returned from injury. Aryna Sabalenka, the defending champion on the women's side, is struggling with form. The opening day featured debuts by teenage stars and emotional appearances by veterans including Serena Williams and Roger Federer. With so much uncertainty at the top, the tournament could deliver surprise champions. Players ranked well outside the top ten believe they have a real chance, and the draw is full of potential upsets. The first round runs through the week as the year's final Grand Slam plays out in New York.
ABC News
Health
Merck and Moderna say their personalized cancer vaccine has shown promise in preventing melanoma from returning after surgery. In a trial, patients who received the vaccine alongside an immunotherapy drug had a lower rate of recurrence than those on the drug alone. The vaccine is built from the patient's own tumor, teaching the immune system to recognize and attack cancer cells. The companies say they will move to a larger trial and are testing the approach against other tumor types. If the results hold, the vaccine could become a new treatment option for one of the most dangerous forms of skin cancer. Experts urge caution until larger data arrives, but the direction is clear.
NBC News
Environment
The world's oceans are running hotter than ever measured. The Copernicus Climate Change Service says daily global sea surface temperature has reached its highest level since records began, with El Niño helping to supercharge warming. Scientists describe the ocean as under unprecedented strain, and the heat is already showing up in coral bleaching, stronger storms, and shifting fisheries. Warmer oceans also absorb less carbon dioxide, weakening one of the planet's natural safety valves for climate change. Researchers warn that record ocean heat is not a one-off anomaly but a pattern that will continue as greenhouse gas emissions keep rising. Governments face growing pressure to cut emissions faster.
Copernicus Climate Change Service