Brook Mitchell / Getty Images fileEnvironmentKoalas may be extinct in Australia's New South Wales by 2050
Eduardo Munoz / Reuters fileCoronavirusNo symptoms, big problems: Scientists still puzzled by asymptomatic coronavirus cases
David J. Phillip / APCoronavirusAmid coronavirus surge, Texas has a contact tracing problem: reporting cases by fax
Kena Betancur / Getty Images fileCoronavirusWhat is pooled testing? How lessons from the HIV epidemic could help fight the coronavirus
Lance King / Getty Images fileScience NewsDogs, humans were side by side 20,000 years earlier than first thought, scientists say
NASA/JPL-Caltech/SETI Institute / via ReutersSpaceSubsurface ocean on Jupiter's moon Europa was potentially 'habitable,' researchers say
NASA / AFP - Getty Images fileNBCBLKNASA names D.C. headquarters for 'Hidden Figure' Mary W. Jackson, agency's first Black woman engineer
DigitalGlobe / via Getty ImagesCoronavirusAt the extremes of the Earth, scientists stymied by coronavirus concerns
Giovanna FigueroaCoronavirusScientists describe 'chaos' of being stuck in the field amid coronavirus lockdowns
APClimate in CrisisFifty years later: Earth Day has descended into GOP-driven chaos, experts warnChanging global and political landscapes have made the kind of broad and bipartisan agreements reached in the 1970s seem impossible.
National Weather ServiceScience NewsA massive dust cloud is barreling toward the U.S. The health impacts could be deadly.
Jon Shapley / Houston Chronicle via APU.S. newsTexas man released on DNA evidence still not exonerated after new suspect confesses to murder
Climate Reanalyzer / University of Maine, Climate Change InstituteClimate in Crisis'Off-the-charts warm': Siberian town hits 100 degrees
Sven Torfinn / FAOCoronavirusWorld scrambles to fight massive plague of locusts that could leave millions hungry
Giles Clarke / Getty ImagesScience NewsIn 'Cancer Alley,' the pandemic has revealed the correlation between ZIP codes and life expectancy
Sadiq Asyraf / AFP - Getty Images fileSpaceThe 2020 'ring of fire' solar eclipse occurs Sunday. Here's how to watch online.