Where Did We Come From?

Today on Discovery Enterprise we present NOVA scienceNOW with
host Neil DeGrasse Tyson which explores the question- "Where did we come
from?"

This episode of NOVA scienceNOW explores the origin of
our solar system and the start of life itself and how head lice figure in human
evolution, and more.

Today we journey
back in time to the birth of our solar system to examine whether the key to our
planet's existence might have been the explosive shockwave of an ancient
supernova. Meet a chemist who has yielded a new kind of "recipe" for
natural processes to assemble and create the building blocks of life. And see
how the head louse, a creepy critter that's been sucking our blood for millions
of years, is offering clues about our evolution. Finally, meet neuroscientist
André Fenton, who is looking into erasing painful memories with an injection.

This episode of NOVA scienceNOW is available on DVD
from PBS.

NOVA scienceNOW: Where Did We Come From?