Vietnam's Hang Son Doong cave has underground spaces large enough to hold a city block of skyscrapers. Read more about the world's biggest cave passage.
Xenicibis xympithecus was a large, flightless, wading bird or ibis. This Extinct Jamaican bird used its wings like a club to bludgeon rivals or predators.
Swollen rivers in Queensland, Australia are carrying heavy sediment loads to the coast. This natural-color image was captured yesterday by instrumentation aboard NASA’s Aqua satellite.
A life of cutting apart leaves wears down the leaf-cutter ant's razor sharp mandibles, and that's when they decide to switch jobs. Read about leaf-cutter ants.
As 2011 opens, flooding in Queensland is forcing people to leave their homes. Police are wading through chest-deep floodwaters in suburbs, telling people to leave.
You can measure the sun with a ruler, tape measure and a small mirror. Yes, the actual size of the sun! You'll need a little math, but it's a great school project.