Harrison gets the help of a forensics expert to take fingerprints and a DNA swab from a crime scene.
Harrison gets the help of a detective to solve a crime and challenges three kids to be witnesses to another crime.
Soft bodied invertebrates have no bones or major hard parts, which gives them some big advantages.
Many of the earth's scariest creatures are actually just trying to survive.
Our bodies may always be getting older - but your brain doesn't have to act its age! Learn how you might be ageing your brain and how to slow down the clock.
The second episode of David Attenborough's critically acclaimed Life In The Undergrowth. This program, highlighted by stunning aerobatics by hoverflies in a Bristol garden and the mass migrations of purple crow butterflies in Taiwan, is the story of the winged insects - the first creatures to take to the air.
Air-conditioning, refrigeration, and superconductivity are just some of the ways technology has put cold to use. But what is cold, how do you achieve it and how cold can it get? Absolute Zero explores these and other facets of the frigid in two one-hour programs.