Where did the coronavirus variant come from, and what does it mean for the pandemic?
A NASA spacecraft enters our star’s atmosphere
Study shows pregnant women who smoke marijuana may bring long-term harm to their babies
Economic realities threaten the feasibility of the Glasgow pledge
The plan would modestly reduce U.S. greenhouse gases, but small energy companies could feel the financial effects
Animal organs could shorten transplant waiting lists, but the research prompts ethics debates about the distinction between animals and humans.
Despite the widespread scientific use of fetal cell lines linked to abortions, pro-lifers hope for alternatives
A historic human cell line has generated controversy—and now a lawsuit
Rock core samples mark a major milestone for NASA mission
The latest IPCC climate change report raises the alarm but offers little that’s new
