People

Where Does Genius Come From?

Submitted by DivineEarth on Thu, 03/11/2010 - 18:59

Tracing talent to its origins probably isn’t ever going to be a precise science, but there’s a particular and pervasive brand of genetic determinism that butts its way into discussions, in scientific circles and in the media, about everything from health to intelligence to the roots of genius. According to author David Shenk, this line of argument leads us to make the wrong conclusions about human potential. —KA

People

Growing low-oxygen zones in oceans worry scientists ~

Submitted by Yannaki on Sun, 03/07/2010 - 20:00

By Les Blumenthal, McClatchy Newspapers Les Blumenthal, Mcclatchy Newspapers – Sun Mar 7, 12:01 pm ET

WASHINGTON — Lower levels of oxygen in the Earth's oceans, particularly off the United States' Pacific Northwest coast, could be another sign of fundamental changes linked to global climate change, scientists say.

They warn that the oceans' complex undersea ecosystems and fragile food chains could be disrupted.

In some spots off Washington state and Oregon , the almost complete absence of oxygen has left piles of Dungeness crab carcasses littering the ocean floor, killed off 25-year-old sea stars, crippled colonies of sea anemones and produced mats of potentially noxious bacteria that thrive in such conditions.

Areas of hypoxia, or low oxygen, have long existed in the deep ocean. These areas — in the Pacific, Atlantic and Indian oceans — appear to be spreading, however, covering more square miles, creeping toward the surface and in some places, such as the Pacific Northwest , encroaching on the continental shelf within sight of the coastline.