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PBS News Hour
Genetics, climate change, space mark the year in science
The year has been a major one for scientific milestones and research. As it comes to a close, we take a look back at some of the biggest science stories, for our weekly series the Leading Edge. Miles O’Brien and William Brangham discuss developments in the genetic engineering of humans, the realization of climate change’s immediate impact on weather and a new era of space exploration.
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56:42
Russian airstrikes bombard Ukraine as ground forces advance on the nation's capital, and elsewhere, forcing civilians to flee for their safety.
56:41
Wednesday on the NewsHour, the U.S. warns Russia is prepared to launch a full-scale invasion as Ukrainian forces mobilize for a possible war.
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Monday on the NewsHour, Russia's leader Vladimir Putin orders troops to eastern Ukraine after recognizing two separatist regions as independent.
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President Biden says war in Ukraine will come soon as the U.S. blames Russian-backed separatists for inflaming conflict in eastern Ukraine.
56:45
Tuesday on the NewsHour, President Biden warns a Russian invasion of Ukraine is still possible despite Moscow's claims that it's pulling back some of its troops.
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Wednesday on the NewsHour, parents remain divided on face coverings in schools as more states repeal their requirements amid declining COVID infections.
57:46
U.S., European and Russian leaders hold separate high-level talks in ongoing attempts to defuse tensions over Ukraine.
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Friday on the NewsHour, the White House chief of staff discusses the latest jobs report and President Biden's domestic priorities.
54:28
Tuesday on the NewsHour, vaccines could soon be available for children under age 5 raising hopes and new questions for parents.
56:46
Justice Breyer's retirement makes way for President Biden to fulfill his campaign promise and nominate the first Black woman to the Supreme Court.
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Monday on the NewsHour, the United States puts thousands of troops on heightened alert as the threat of Russian invasion grows more severe.
56:43
Friday on the NewsHour, health systems buckle under the latest surge of hospitalizations from COVID-19 as schools struggle to keep the virus at bay.