NASA called the cluster a "pocketful of...

Pharma giant AstraZeneca and Oxford University on Saturday said they had resumed a Covid-19 vaccine trial after getting the all-clear from British regulators, following a pause caused by a UK volunteer falling...

Drugmakers racing to develop a safe and effective coronavirus vaccine pledged in July to ensure their larger clinical trials would include diverse sets of volunteers. "Diversity in clinical trials is a priority for Pfizer and is critical given that COVID-19 disproportionately impacts communities of color in the U.S.," Pfizer's Chief Business Officer John Young said in a U.S. congressional hearing...

The idea is not that those with peanut allergies will be able to eat the nuts freely, but that the severity of their reactions could be...

The naturalist warns that a million species are at risk but says it is not too late to save...

The world's biggest carbon trading market faces a major overhaul under European Union climate change plans to cut greenhouse gas emissions faster this decade, a draft seen by Reuters shows. Under the EU emissions trading system (ETS) factories and power plants have to buy pollution permits to cover the greenhouse gases they emit, while airlines must do so for flights within Europe. The draft...

China's Mars probe Tianwen-1, which blasted into space in July, is now more than 15 million kilometers (9 million miles) from Earth en route to the red planet, the National Space Administration said Saturday. The administration, however, has yet to release information about a mysterious reusable experimental spacecraft that returned to Earth a week ago after a two-day flight. The spacecraft...

Dark matter, mysterious invisible stuff that makes up most of the mass of galaxies including our own Milky Way, is confounding scientists again, with new observations of distant galaxies conflicting with the current understanding of its nature. Research published this week revealed an unexpected discrepancy between observations of dark matter concentrations in three massive clusters of galaxies...