Ecologist and explorer Mark Moffett has trekked across the globe to document new animal species and behaviors. Just like the creatures he studies, Mark can be found crawling in the …

What does it actually take to understand the universe at its deepest level, and what happens when the rules that govern it seem to contradict each other? Theoretical physicist Leonard …

Neuroscientist André Fenton’s fascination with the human brain led him to study how we interpret the world. Check him out as he leads a group of students through interactive games …

Safest Halloween costume, longest-running washing machine, toys that work! Engineer Rachel Rothman and her team of engineers, chemists and researchers make sure these marketing claims, are true as part of …

Microbiologist Hazel Barton goes spelunking in sticky mud, camping underground, and rope climbing in a atrium—all to research cures for antibiotic-resistant diseases. Episode filmed live at the 2009 World Science …

How fast is the universe expanding? Two prominent approaches are finding different answers, propelling cosmology toward a crisis. Wendy Freedman, a renowned astronomer who has spent decades seeking the expansion …