* T. rex "granddaddy" described as vicious little monster:
Fossils suggest Tyrannosaurus Rex's earliest known ancestor was a fierce hunter who wore a crown for the ladies, scientists say.
Carl Zimmer has an excellent write-up on this.
* Lost World of wildlife found in jungle:
An expedition to an isolated Asian jungle revealed new species, giant flowers and exotic animals unafraid of humans, according to scientists.
Hedwig has the best summary.
* For women, eating "good" fats found more important than eating less fat:
A popular theory, that cutting fat intake alone helps prevent cancer and heart disease, is in question, researchers suggest.