Archive: 11/2/2006

Pulsating gels could power tiny robots

As a kid, did you ever put those little capsules into warm water and watch them grow into dinosaurs? When certain gels are put into a solution, they will not only expand, but also contract again, repeatedly, as if the little ...

Nov 02, 2006 4.4 / 5 (28) 0

Rare transit of Mercury

Scientists from Williams College and the University of Arizona observed Mercury in front of Venus from vantage points on earthbound mountains and with orbiting spacecraft on Wednesday.

Nov 02, 2006 3.5 / 5 (6) 0