Scientists have completed the broadest search to date for extraterrestrial civilizations by scanning roughly 10.3 million stars using a radio telescope in Australia, but have found nothing - not yet, at least. Seeking evidence of possible life beyond our solar system, the researchers are hunting for "technosignatures" such as communications signals that may originate from intelligent alien...

A record amount of California is burning, spurred by a nearly 20-year mega-drought. Meanwhile, the Atlantic’s 16th and 17th named tropical storms are swirling, a record number for this time of year. Phoenix keeps setting triple-digit heat records, while Colorado went through a weather whiplash of 90-degree heat to snow this...

People from San Francisco to Seattle woke Wednesday to hazy clouds of smoke lingering in the air, darkening the sky to an eerie orange glow that kept street lights illuminated into midday, all thanks to dozens of wildfires throughout the West. “It's after 9 a.m. and there's still no sign of the sun,” the California Highway Patrol's Golden Gate division tweeted, urging drivers to turn on...

Amid busy construction crews racing to build an airport in Mexico, scientists are unearthing more and more mammoth skeletons in what has quickly become one of the world's biggest concentrations of the now-extinct relative of modern elephants. More than 100 mammoth skeletons have been identified spread across nearly 200 excavation sites, along with a mix of other Ice Age mammals, in the area...

Twenty-six scientists, most of them working at universities in Italy, have signed an open letter questioning the reliability of the data presented in the early-stage trial results of the Russian COVID-19 vaccine, named "Sputnik-V". Addressing the editor of The Lancet, the international peer-reviewed medical journal in which Moscow's Gamaleya Institute published its early-stage trial results, the...

Like a lot of young people, 11-year-old Izzy Bee has a special bond with animals. Unlike a lot of young people, she shares it with one of the planet's most cuddly — koalas. Izzy is showing that unusual bond in the new Netflix series “Izzy's Koala World,” which follows the girl as she helps her veterinarian mom and takes care of the tree-climbing...

In a video shared with the BBC, the passenger, Nick, is told by the pilot that the plane won't take off until he wears a...

Concentrations of greenhouse gases in the Earth's atmosphere hit a record high this year, a United Nations report showed on Wednesday, as an economic slowdown amid the coronavirus pandemic had little long-term effect. "Greenhouse gas concentrations - which are already at their highest levels in 3 million years - have continued to rise," said Petteri Taalas, head of the World Meteorological...

Fires in Brazil's Amazon rainforest worsened in the first week of September and are increasingly spreading into areas of untouched forest, satellite data showed as of Wednesday, after the number of fires likely reached a 10-year high in August. Brazil reported 8,373 fires in its portion of the Amazon rainforest for the first seven days of September, more than double the number of fires in the...

The world is getting closer to passing a temperature limit set by global leaders five years ago and may exceed it in the next decade or so, according to a new United Nations report. In the next five years, the world has nearly a 1-in-4 chance of experiencing a year that’s hot enough to put the global temperature at 2.7 degrees (1.5 degrees Celsius) above pre-industrial times, according to a new...

Very little is known about the Chinese vehicle that has been compared to the US's X-37 space...

AstraZeneca has paused global trials of its experimental coronavirus vaccine after an unexplained illness in a participant, denting the British drugmaker's shares as the move was seen as dimming prospects for an early rollout. "This is a routine action which has to happen whenever there is a potentially unexplained illness in one of the trials," AstraZeneca said in an emailed...

Safety of a prospective COVID-19 vaccine comes "first and foremost", the World Health Organization's chief scientist said on Wednesday, as a trial of a leading candidate from AstraZeneca was paused due to concerns over side effects. Rollout of an effective vaccine is seen as a crucial step in helping battered economies recover from the coronavirus pandemic. "Just because we talk about speed...it...

Swiss drugmaker Roche, whose multiple sclerosis (MS) drug Ocrevus is being targeted by a rival medicine from Novartis, is advancing an experimental drug in a trial while also testing if Ocrevus works in a higher dose. Roche has started a late-stage clinical trial for its molecule fenebrutinib and is doing a clinical trial of higher-dose Ocrevus against relapsing MS and primary progressive...

Swiss drugmaker Roche, whose multiple sclerosis (MS) drug Ocrevus is being targeted by a rival medicine from Novartis, is advancing an experimental drug in a trial while also testing if Ocrevus works in a higher dose. Roche has started a late-stage clinical trial for its molecule fenebrutinib and is doing a clinical trial of higher-dose Ocrevus against relapsing MS and primary progressive...