You can find several versions on YouTube of this extraordinarily beautiful phenomenon of dolphins, plus a short segment of an awesome underwater bubble ring.
Paleobotanist Sir Peter Crane talks about the connections between fossilized and living plants, and about how human activity can impact how a flower adapts.
Earth scientist Bruce Marsh talks about the first contact discovery of molten magma inside Earth. The dynamic movement of magma has helped shape the world on which we stand.
The concept of saving face is so ingrained in the Japanese culture that its homeless population will do anything rather than the humiliation of asking for help.
Peter Smith, Principal Investigator of NASA's Phoenix Mars Mission talks about some possible evidence of signs of life in Martian soil by studying chemicals on Mars.