Chemical weapons: a brief history from WWI to Syria
Chemical weapons can be both powerful and terrifying. From the chemical-soaked battlefields in WWI, to cities in Syria, here is a look at their role in the last 100 years of modern warfare.
Alchemy and Science: Fantastic Beasts’ real-life connection to a 14th century Parisian scribe05:10
Super-Earth exoplanet discovered orbiting a star just 6 light-years from our sun01:29
Could this cosmic interloper be an alien spacecraft? Neil deGrasse Tyson isn’t so sure03:52
'A bumpy ride ahead': Astronomer Martin Rees on humanity's chance of surviving the 21st century03:48
The search for alien life in Nevada05:09
Deep Fakes: How they’re made and how they can be detected04:14