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Scientists are now checking to see if purified blood serum from people who have recovered from COVID-19 might be more than a useful treatment. Perhaps it's a way to prevent disease in someone else.

The video, produced three decades ago, shows a bobbing Hitler and Nazi symbols along with a photo of a young Krvaric, who is now the chairman of the San Diego County Republican Party.

The Trump administration is replacing Obama-era fuel economy standards with weaker ones that will allow for more air pollution. Groups are already lining up to challenge the new rule.

Former NPR journalist Lulu Miller was inspired by a scientist who started again when his life's work was destroyed. Now, she writes about what she can take from his story, even when it's not all good.

As coronavirus cases surge in many states, a new color-coding tool backed by a coalition of top scientists provides an apples-to-apples way of comparing outbreak severity, down to the county level.

A new national effort aims to deliver better online learning to any district that wants it. Some worry the program is overpromising.

A review by the RAND Corporation finds little evidence as to whether many popular gun control policies do or don't affect gun violence. In many cases, solid studies just haven't been done.

Find updates, news and reaction on the final stretch of the 2020 election.

Co-Diagnostics, a company that has provided coronavirus tests to three state governments, has come under intense scrutiny for claims about its tests' accuracy and stock sales by company leaders.

Co-Diagnostics, a company that has provided coronavirus tests to three state governments, has come under intense scrutiny for claims about its tests' accuracy and stock sales by company leaders.