You are hereglobal-warming
global-warming
Ocean pollution. Sea "dead zones", oxygen-deprived, fishless: 1st recorded in 1970, 417 in 2008, largest covers 70,000 sq km
A new global study of Earth’s oceans shows a rapid rise in the number of “dead zones” - areas of seafloor with too little oxygen to sustain most marine life. The oxygen-starved waters have proliferated since the 1960s and now rank as one of the world's most pressing environmental problems.
Clocking in at over 8000 square miles (21,000 km2) this year, probably the largest dead zone today stems from the Mississippi River delta in the Gulf of Mexico. This is a site at the confluence of significant farming in the midwest and significant fishing (and shrimping) in the Gulf area. The dead zone spans east to west along the Louisiana and Texas coasts.
Several visible sites with expanding dead zones. Mississippi Delta at the top, with Yangtze River in the bottom left and Pearl River in the bottom right. The dead zones are the tinted clouds swirling at the coastal edge.
read more »
Humans drive extinction faster than species can evolve; diversity loss due to destroyed habitats & climate change
Threatened. L: the red squirrel will be lost within the next 20-30 years unless effective action is taken. This poor fella's just heard the news. R: the pine marten. One of England’s rarest, & cutest, mammals.
A pair of giraffes nuzzle as they stand in the bush near Koure, Niger. The IUCN lists west African giraffes as an endangered species.
A giraffe from Africa's most endangered giraffe subspecies. Their numbers have quadrupled to 200 since 1996, an unlikely boon experts credit to the impoverished government keen for revenue that has enacted laws to protect them, a conservation program that encourages people to support them, and a rare harmony with humans who have accepted their presence.
Climate change is robbing polar bears of their habitats, & is the greatest threat to their survival.
Polar bear products are used for furs, rugs and taxidermy. Melting sea ice in Arctic will kill thousands of bears in coming years; US says commercial trade must not be allowed to make the situation worse. read more »
Methane (greenhouse gas 25x potent as CO2) bubbles out 5x faster. Warmer air thaws Arctic soil, 50 bil tonnes may be released
Researchers believe the Arctic Ocean seabed is thawing in patches and releasing greenhouse gases. Methane, trapped in the permafrost, 25 times more powerful than carbon dioxide, is bubbling out of the frozen arctic faster than expected.
Researchers ignite a bubble of methane on Alaska’s Steward Peninsula.
Methane is leaking from the East Siberian Arctic Shelf into the atmosphere at an alarming rate. The amount leaking from this locale is comparable to all methane from rest of the world's oceans put together. Methane is a greenhouse gas more than 30 times more potent than carbon dioxide.
Left: Researcher ignites a pocket of methane. Right: methane bubbles trapped in lake ice in Siberia in early autumn.
(quote) read more »
Giant iceberg, 965sqmi (2500sqkm, 400m thick) split fr Antarctica, holding "enough water to fill River Thames 100 times."
An giant iceberg has broken off from Antarctica, created when it was hit by another iceberg two weeks ago. The size of Luxemberg, it could disrupt ocean circulation patterns.
The 965 sq mile (2,500 sq km) block of ice broke off from the Mertz Glacier which ends in a floating tongue of ice that protrudes 100 miles (160 km) out into the Southern Ocean. The 'calving' - or splitting of the ice sheet - resulted a collision with another iceberg.
Glaciers are melting, sea levels are rising, cloud forests are drying, and wildlife is scrambling to keep pace. It's becoming clear that humans have caused most of the past century's warming by releasing heat-trapping gases as we power our modern lives. Called greenhouse gases, their levels are higher now than in the last 650,000 years.
A large iceberg was spotted off an island about halfway between Antarctica and Australia, a rare sight in waters so far north. read more »
ThinkAhead™ Calendar "To Health of Earth" 201001-201012 (Ocean)
TimeAheadTM Calendar
"To Health of Earth"
January 2010 - December 2010
Click here to view larger image and download the 8.5"x11" letter-size printable calendar (pdf file).