Environmental

Recent Posts

The Cambrian "Explosion" is looking less so
Posted on 1 Dec 2010 by Thomas H. Clarke, Jr.

The Cambrian "explosion", as evidenced by the fossil record of specific aspects of the Burgess Shale, has been interpreted as representing the relatively rapid appearance of most major Phyla over the course of several million years. The fossils... Read More

The key to the recovery of sturgeon stocks appears to be preservation of older female fish
Posted on 6 Jun 2010 by Thomas H. Clarke, Jr.

Prior posts have noted the various strategies for assuring the recovery of depleted fish stocks, particularly the creation of no-fish zones. A recent study has found that in terms of restoring caviar-producing sturgeon the key is saving grown females... Read More

New genetic analysis split Killer Whales into 4+ species
Posted on 16 May 2010 by Thomas H. Clarke, Jr.

Turn on the Science Channel or Animal Planet, and until very recently Killer Whales (actually a type of oceanic dolphin) were described as a single unitary species. Now, genetic analysis indicates that in fact they are at least four species, perhaps... Read More