共找到 20 条结果
Freshwater lakes across North America and Europe are becoming noticeably browner, reducing underwater visibility and reshaping fish populations。 Research found that several popular sport fish, including trout, bass, perch, and whitefish, tend to decline in darker waters。 Meanwhile, walleye and northern pike often become more abundant because they a
Tyrannosaurus rex may have been a much slower grower than scientists realized。 A new study of 17 tyrannosaur fossils found that the giant predator likely took about 40 years to reach its full size of roughly eight tons, extending previous estimates by 15 years
Tesla touts Autopilot as lifesaving a day after grandmother died in crash
President Trump probably can’t get rid of her yet, but FCC commissioner Anna Gomez still checks her email every day to see if he has。 Until then, she wants to stand up for the First Amendment
Emily Wilson’s 2017 translation of Homer’s epic—the first by a woman—was called a woke “abomination” by online reactionaries。 Christopher Nolan’s film is facing similar critiques
"Winning" bets were made on cloned website and would have lost money, WSJ finds
A rare meteorite has revealed evidence of a massive lost world that once orbited the young Sun before being destroyed in a catastrophic collision。 The discovery suggests some early planets formed from dramatically different materials than Earth and Mars, rewriting part of the solar system’s origin story
Researchers found that twisting layered sheets of hexagonal boron nitride can dramatically change the light produced by quantum emitters embedded within the material。 The technique offers an unexpected new level of control over components that could power future quantum computers, communications systems, and sensors
Scientists discovered that Heliconius butterflies have evolved an extraordinary lifespan, living several times longer than closely related species。 Even more surprising, some show little sign of physical decline as they age。 Their unusual pollen-feeding lifestyle may play a role, but the research suggests deeper evolutionary changes are also helpin
A colossal ancient collision may have left some of the Moon’s deepest secrets surprisingly close to future Artemis landing sites。 By recreating the impact that formed the giant South Pole-Aitken basin—the Moon’s largest and oldest crater—scientists found that a low-angle strike from a large, iron-cored object blasted material from deep inside the M
A supercomputer in Shenzhen was declared the world’s fastest。 It uses only standard microprocessors and not the special-purpose chips called graphics processing units