Why Are So Many People Allergic To Food? [Science Video]

More people have food allergies than ever before. Peanuts, tree nuts, shellfish, eggs, and even milk… the list of possibly dangerous foods seems to get longer every day. But why do some people’s bodies have deadly reactions food? And why are food allergies on the rise? In this video we explain what food allergies really […]

Why do hospitals have particle accelerators? [Science Video]

Is there a way to detect diseases like cancer and Alzheimer’s before they advance too far? Doctors are using injected radioactive drugs that circulate through the body and act as a beacon for PET scanners. These diagnostic tools can detect the spread of diseases before they can be spotted with other types of imaging. So […]


How tall can a tree grow? [Science Video]

Reaching heights of over 100 meters, Californian sequoias tower over Earth’s other 60,000 tree species. But even these behemoths seem to have their limits: no sequoia on record has been able to grow taller than 130 meters. So what exactly is stopping these trees from growing taller, forever? Valentin Hammoudi investigates why trees have limited […]

What is the Difference Between Bees, Wasps, and Hornets?

There are many similarities and differences between our little wing-whipping friends. For starters, all can sting you. That said, you may derive some solace in the fact that when certain of them sting humans, they die- not so when they sting many other animals. The barbed stingers on honey bees particularly end up getting lodged […]