Wednesday, Mar 12th
Last update07:51:29 AM GMT
Environmental News Archive
The ozone layer has seen unprecedented damage in the Arctic this winter due to cold weather in the upper atmosphere. By the end of March, 40% of the ozone in the stratosphere had been destroyed, against a previous record of 30%.
The ozone layer protects against skin cancer, but the gas is destroyed by reactions with industrial chemicals. These chemicals are restricted by the UN's Montreal Protocol, but they last so long in the atmosphere that damage is expected to continue for decades.
As the Fukushima crisis passes the three-week mark, the thousands of tons of water – used to keep crippled reactors and spent-fuel pools cool – are becoming an increasing concern.
Much of the water evaporates, or else collects inside spent-fuel pools or other secure areas. But in the wake of the March 11 earthquake, water has also escaped from the damaged reactor buildings, flowing into the maintenance tunnels and basements, and then to unknown parts.
Thus, radiation from a meltdown in the reactor core of reactor No. 2 is leaking out into the water and soil, with other reactors continuing to experience problems.
Yet scientists and activists question these government and nuclear industry “safe” limits of radiation exposure.
The estimates were made on March 16th following explosions at the plant by an institute commissioned by the government using a computer system called SPEEDI. The system made its projections on the assumption that radioactive substances had been released for 24 hours from midnight on March 14th, based on the available data.
As radiation drifts westward from the recently battered Land of the Rising Plume, the U.S. is taking all necessary precautions to prevent a nuclear disaster on their own soil. Quickest to do their part appears to be the Environmental Protection Agency, which intends to counter harmful radiation exposure by proclaiming radioactive contamination now safer than ever!
The company that owns the now-infamous Deepwater Horizon, the oil rig that caused immeasurable damage to the Gulf, recently applauded itself for the "best year in safety performance in our Company's history." The company, Transocean Ltd., rewarded its executives millions in bonuses for the achievement, according to the annual report it released yesterday.
Steven L. Newman, Transocean's president and CEO, awarded himself $4.3 million in cash bonuses, stocks and options.
While the nuclear crisis in Japan has focused attention on the risks of spent fuel piling up at the U.S.'s reactors, one curious fact has gone largely unnoted: There is $24 billion sitting in a "nuclear waste fund" that can't actually be used to pay for a safer way to store the waste at reactors.
In 1982, Congress passed the Nuclear Waste Policy Act, and the federal government effectively struck a deal with the nuclear industry: Reactor operators and their customers would pay a tax on the waste they produced, and the government would use the money to create a safe place to store it for generations.
The measurements also showed high levels of cesium and were taken outside the discharge canal for the plant's Nos. 1, 2, 3 and 4 reactors.
Readings from a short distance away, outside the Nos. 5 and 6 units' discharge canal, showed lower but still high radioactive iodine levels some 284 times above normal.
One of the largest challenges in climate science is determining how the great ice sheets over Greenland and Antarctica will respond to the increase in temperatures expected from rising concentrations of heat-trapping emissions in the atmosphere.
On Wednesday, a research team led by a NASA scientist unveiled a new study that is sure to stir debate on the topic. The paper concludes that ice loss from both Greenland and Antarctica is accelerating, and that the ice sheets’ impact on the rise in sea levels in the first half of the 21st century will be substantially higher than previous studies had projected.
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