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Latest David Battisti Stories

2011-06-20 19:49:24

There have been instances in Earth history when average temperatures have changed rapidly, as much as 10 degrees Celsius (18 degrees Fahrenheit) over a few decades, and some have speculated the same could happen again as the atmosphere becomes overloaded with carbon dioxide. New research lends support to evidence from numerous recent studies that suggest abrupt climate change appears to be the result of alterations in ocean circulation uniquely associated with ice ages. "There might be other...

2010-02-11 16:17:04

Yields from some of the most important crops begin to decline sharply when average temperatures exceed about 30 degrees Celsius, or 86 Fahrenheit. Projections are that by the end of this century much of the tropics and subtropics will regularly see growing season temperatures above that level, hotter than the hottest summers now on record. An international panel of scientists writing in the Feb. 12 edition of the journal Science is urging world leaders to dramatically alter their notions...

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2009-01-09 14:40:00

Scientists warn that looming global warming could induce a worldwide food shortage crisis by the next century. Warming could result in a reduction of crop yields in the tropics and subtropics by 2100, said Prof David Battisti of the University of Washington, Seattle. His team used 23 models to predict a future of unprecedented heat."The hottest seasons on record will represent the future norm in many locations," said Battisti, a professor of atmospheric sciences."The stresses on global food...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.