Latest Michael Alfaro Stories
Thanks to an extensive research effort by a large international team, endangered monkeys in the Amazon have been found to be much more diverse than previously thought.
A new study of Old World monkeys, published in the journal Nature Communications, has suggested that they rely on facial features to recognize each other, particularly for those primates living in larger groups.
Basic logic would suggest that the longer a species is around—the more time it has to adapt and evolve, eventually sprouting another whole branch on the tree of life.
UCLA biologists working as "evolutionary detectives" studied the faces of 129 adult male primates from Central and South America, and they offer some answers in research published today, Jan. 11, in the early online edition of the journal Proceedings of the Royal Society B.
Biologists from the UCLA Division of Life Sciences have reported the first quantitative evidence for an evolutionary link between habitat and body size in turtles and tortoises.
Whales are remarkably diverse, with 84 living species of dramatically different sizes and more than 400 other species that have gone extinct, including some that lived partly on land.
Mammals and many species of birds and fish are among evolution's "winners," while crocodiles, alligators and a reptile cousin of snakes known as the tuatara are among the losers, according to new research by UCLA scientists and colleagues.
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.