Thawing permafrost is full of ice-forming particles that could get into the atmosphere
Ice-nucleating particles typically play a major role in cloud behavior, and the strength of that effect is still being studied.
Ice-nucleating particles typically play a major role in cloud behavior, and the strength of that effect is still being studied.
The entire administration is mobilizing to take on the challenge from every angle in a strategic, integrated way.
Harriet Tubman worked as a slave, spy and eventually an abolitionist. Her belief in God helped her remain fearless.
Steven Pressman and two other economists share what's on the top of their wish lists for President Biden and Congress, and why.
Light pollution, such as that from cities, can severely disorient migratory birds and make it hard for them to navigate.
Some animals can detect many chemical signals over great distances and can make rapid and accurate mental associations about them.
While it never regained its lofty status as the top diet soda, loyal Tab fans kept the brand alive.
A number of tweets went viral over the weekend of Nov. 7 and 8 that showcased a version of masculinity that contrasts sharply with the one projected by Donald Trump.
In June 2015 Donald Trump rode an escalator into the lobby of Trump Tower in New York City to announce his candidacy for president – an escalator ride that quickly became famous.
The U.S. economy rebounded from its unprecedented coronavirus plunge in the spring with a record surge over the summer, giving the president some good news just days before Election Day.