canyons
Amazing Earth 1
submitted by: scivee-team
A documentary about volcanic eruptions, their causes and effects on Earth and the geological implications of those events in history and in the future - Part 1.
Landing on Mars
submitted by: scivee-team
Gerry Soffen, a Viking Mission Scientist, talks about his memories from the first successful landing on Mars and what it revealed about the planet's surface.
Looking back at the dramatic first landing on Mars.
Looking back at the dramatic first landing on Mars.