The RTS,S vaccine has done well in clinical trials, but it might be hard to implement in the real world.
Whitson has now spent the most cumulative time in space of any American.
A toxic algae that ravages animals' brains has been killing sea lions in California.
The European Space Agency warns space debris is a serious problem that only a global response can fix.
Despite claims that the March for Science was nonpartisan, there was a lot of anger directed at President Trump.
Protestors at the March for Science spoke about climate change, the EPA and inspiring others.