Earth Changes
Okmok Volcano, located on Umnak Island, had an explosive eruption that started just before noon and was continuing through Saturday night, reported the Alaska Volcano Observatory, the joint state-federal agency that monitors Alaska's volcanoes.
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©Jesus Pajon |
Every now and then, Jesus Pajon, a researcher with the Archaeology Department of the Cuban Anthropology Institute and head of the paleo-climate- Archaeology scientific project, puts on his "armor" to take samples of the waters that seeps through the walls of the Majaguas-Cantera cave system, at the San Carlos mountain range, in western Pinar del Río province.
In the last few days farmers have lost between 40 and 100 per cent of their oysters aged one to two years old.
Such a death toll has not been seen in France since 1970, when virtually an entire harvest was wiped out. Experts are unsure if the shellfish are succumbing to a viral epidemic or to poor water conditions caused by global warming.
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©Unknown |
The antler moth caterpillars, which are about two inches long, have hatched in their millions in the Helvellyn and Skiddaw areas.
The phenomenon, which has always been thought to occur once in every eight to 10 years, has left wide expanses of dead grass where sheep are normally grazed. But what is puzzling the experts is the fact that there was also an invasion of caterpillars last year.
For the first time in living memory, the plague of caterpillars has been followed by a second epidemic in the subsequent year.
Lead has long been known to be damaging to biology. It's previous use in gasoline, paint, pesticides, and solder in food cans has nearly been eliminated. Lead shot was banned for waterfowl hunting in 1991, but its use in ammunition for upland hunting, shooting sports, and in fishing tackle remains common.
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©Jacobson et al. 1977, courtesy of Journal of the American Veterinary Medical Association |
Radiograph of immature bald eagle containing numerous lead shot in its digestive tract. |
Numerous previous studies have documented adverse effects to wildlife, especially waterbirds and scavenging species, like hawks and eagles, the researchers say. Lead exposure from ingested lead shot, bullets, and fishing sinkers also has been reported in reptiles, and studies near shooting ranges have shown evidence of lead poisoning in small mammals.
The U.S. Geological Survey said spring nutrient delivery from the Mississippi-Atchafalaya River Basin to the northern Gulf of Mexico was among the highest in the last three decades. Nutrient delivery is one of the primary factors controlling the size of the hypoxic zone in the northern Gulf of Mexico. Oxygen levels in the zone are too low to support most life.
"Typically, July marks the peak in lightning activity. It's also the time when people are vacationing, so they are outside and they are vulnerable to lightning," said John Jensenius, a lightning safety expert at the National Weather Service.
But why so many young people in a few days? "I don't have an answer for that," Jensenius said, "It's all very sad."