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Posts Tagged ‘heat waves’

Extreme Summer Temperatures Occur More Frequently

February 16, 2012 Comments off

nanopatentsandinnovations.blogspot.com

Extreme summer temperatures are already occurring more frequently in the United States, and will become normal by mid-century if the world continues on a business as usual schedule of emitting greenhouse gases.

The white colored rock (approximately 100 feet high) shows the drop in the water level of Lake Mead as a result of the ongoing 10-year drought along the Colorado River.

Photo courtesy of Guy DeMeo , U.S. Geological Survey

By analyzing observations and results obtained from climate models, a study led by Phil Duffy of the Lawrence Livermore National Laboratory showed that previously rare high summertime (June, July and August) temperatures are already occurring more Read more…

Climate change threatens tropical birds

February 16, 2012 Comments off

sciencecodex.com

Rainbow-billed toucans like the one shown here normally are confined to lower elevations in Costa Rica, but global warming is allowing them to colonize mountain forests, where they compete with resident birds for food and nesting holes, and prey on their eggs and nestlings. (Photo Credit: Cagan Sekercioglu, University of Utah)

SALT LAKE CITY — Climate change spells trouble for many tropical birds – especially those living in mountains, coastal forests and relatively small areas – and the damage will be compounded by other threats like habitat loss, disease and competition among species.

That is among the conclusions of a review of nearly 200 scientific studies relevant to the topic. The review was scheduled for online publication this week in the journal Biological Conservation by Çağan Şekercioğlu (pronounced Cha-awn Shay-care-gee-oh-loo), an assistant professor of biology at the University of Utah.

There are roughly 10,000 bird species worldwide. About 87 percent spend at least some time in the tropics, but if migratory birds are excluded, about 6,100 bird species live only in the tropics, Şekercioğlu says.

He points out that already, “12.5 percent of the world’s 10,000 bird species are threatened with extinction” – listed as vulnerable, endangered or critically endangered by the International Union for Conservation of Nature (http://www.redlist.org).  Şekercioğlu’s research indicates about 100 to 2,500 land bird species may go extinct due to climate  Full article here

Heat wave chokes southern U.S.

August 5, 2011 Comments off

thestar

The suffocating heat wave sweeping the southern U.S. that has led to at least four deaths and left farmers’ fields bone dry shows no signs of abating as temperatures continue to reach record highs and electricity demand threatens to cripple the power grid.

The National Weather Service issued yet more excessive heat warnings Thursday for most of the southern plains, where the temperature in parts of Kansas, Oklahoma, Arkansas, Tennessee, Mississippi, Louisiana, and Texas reached as high as 43C, without the humidex.

Southern parts of California and Arizona in the west and Georgia, Florida and the Carolinas in the east also fell under heat advisories, while municipalities and counties scrambled to open cooling centres and make house calls on vulnerable residents.

Dallas marked its 34th straight day of temperatures over 38C, while on Wednesday, Fort Smith, Ark., saw the temperature reach 46C without the humidex, breaking a record of 42C set back in 1896.

As if things couldn’t get any worse, Florida residents are bracing for the Read more…

Need Versus Greed

March 1, 2011 Comments off

project-syndicate.org

NEW YORK – India’s great moral leader Mohandas Gandhi famously said that there is enough on Earth for everybody’s need, but not enough for everybody’s greed. Today, Gandhi’s insight is being put to the test as never before.

The world is hitting global limits in its use of resources. We are feeling the shocks each day in catastrophic floods, droughts, and storms – and in the resulting surge in prices in the marketplace. Our fate now depends on whether we cooperate or fall victim to self-defeating greed.

The limits to the global economy are new, resulting from the unprecedented size of the world’s population and the unprecedented spread of economic growth to nearly the entire world. There are now seven billion people on the planet, compared to just three billion a half-century ago. Today, average per capita income is $10,000, with the rich world averaging around $40,000 and the developing world around $4,000. That means that the world economy is now producing around $70 trillion in total annual output, compared to around $10 trillion in 1960.

China’s economy is growing at around 10% annually. India’s is growing at Read more…