Though Pyongyang has largely pulled its soldiers off the front lines in Ukraine, it is expanding the types of ammunition it supplies to Russia.

A statistical analysis of an infamous indentation in a sidewalk suggested a 99 percent likelihood that another rodent made the mark.

© Evan Jenkins for The New York Times

Under Trump, the N.I.H. is encouraging alternatives that use human cells rather than dogs, cats and monkeys.

It’s easy to understand why the Trump administration’s funding cuts to D.E.I.-related research will harm the overall health of underrepresented groups, including women, people of color and L.G.B.T.Q. people. But they could actually hurt white men too.

If these podcasts really wanted to nurture enthusiasm for science, they should celebrate the hard work that goes into finding the right answer.

China had fueled climate optimism. But now the story seems to be changing.

As China threatens to overtake U.S. leadership in science and technology, America has responded by sabotaging its own engines of progress.

Its vast investment in solar, wind and batteries is on track to end an era of global growth in the use of coal, oil and gas, the researchers said.

Science has yet to find a clear path to building intelligence that surpasses that of humans.

China’s biotechnology sector has established a bright future by focusing not on breakthrough cures and treatments but on speed and efficiency.

A surge in high quality research and patent applications has cemented China’s dominance in the industry.