When heat waves on land cause wildfires, people see them and notice them. But scientists are warning that heat waves in the oceans may be causing as much or more damage.
A biker who was leading a women's bike race by two minutes was forced to stop when she nearly caught up with the group of men who had started the same race eight minutes earlier.
Tens of thousands of people have been marching in Algeria. They are protesting because President Abdelaziz Bouteflika, who has led the country for the last 20 years, says he's running for president again.
Two different groups of scientists are looking at the way mice talk to each other, but they are doing this in very different ways. Both sets of scientists are learning amazing new information about mice.
An important meeting between US President Donald Trump and North Korean leader Kim Jong-Un ended suddenly on Thursday when both sides decided they could not agree.
Last year, French and Australian scientists learned that bees could understand the idea of "zero". Now the same scientists have discovered that bees can add and subtract.
Nigeria's elections, which were delayed by a week and troubled by violence, have ended with the re-election of President Muhammadu Buhari.
For years Katherine Johnson worked at NASA, doing math that saved lives. It took a long time for her work to get much attention. Now NASA has named two buildings for her.
Voters on the southern Japanese island of Okinawa have voted against allowing the US to build a new military base to replace an old one. The Japanese prime minister says the base will be built anyway.
US President Donald Trump has declared a national emergency to get money to build a wall between the US and Mexico. This unusual move is testing the US system of government.
In recent weeks scientists have found two very different animals that have not been seen in dozens of years - a very rare tortoise and the world's largest bee.