Group items tagged

NASA research shows Earth's atmosphere contains an unexpectedly large amount of an ozone-depleting compound from an unknown source decades after the compound was banned worldwide.

Governments have delivered the third major international climate change agreement inside 12 months, thanks to a new global deal to phase out the use of hydrofluorocarbons (HFCs). Nearly 200 countries signed off on the deal to amend the existing Montreal Protocol covering ozone layer-depleting chlorofluorocarbons (CFCs) and extend it to apply to the powerful HFC greenhouse gases commonly used in fridges, air conditioning units and aerosol sprays.

Governments have delivered the third major international climate change agreement inside 12 months, thanks to a new global deal to phase out the use of hydrofluorocarbons (HFCs). Nearly 200 countries signed off on the deal to amend the existing Montreal Protocol covering ozone layer-depleting chlorofluorocarbons (CFCs) and extend it to apply to the powerful HFC greenhouse gases commonly used in fridges, air conditioning units and aerosol sprays.

These small-scale fishermen in southern Japan are up against an industrial fishing juggernaut that is rapidly depleting stocks of Pacific bluefin tuna. A prime culprit behind the crisis, the Iki fishermen said, is a high-tech Japanese fishing armada that mines the waters northeast of Iki where Pacific bluefin tuna congregate to spawn. For the past 11 years, convoys of boats have waited in the Sea of Japan for these fish to gather, then used sonar tracking devices and huge purse seine nets to scoop them up by the thousands and sell them to global seafood giants such as Nippon Suisan Kaisha and Maruha Nichiro Corporation.

To shrink the hole in the ozone layer, we need to cut down on dangerous substitutes for ozone-depleting substances

Southern Co.'s coal plants are among the biggest carbon emitters in the U.S., but the company is about to build a new carbon-capture plant that could play a vital role in slowing climate change. The Mississippi plant, along with another in Canada, will capture carbon emissions and pump them into depleted oil reservoirs

"Water is the ultimate shared resource," according to WWF's Lindsay Bass, and collaborative solutions to its depletion are crucial. WWF is working with companies to manage their water use through its Water Risk Filter tool and its strategic alliances with the private sector. I spoke with Bass about the opportunities for companies to improve their water management and become "positive actors" in shared watersheds. 

For nearly a century, Californians have drained an incredible amount of water from the ground to grow crops and water landscaping. It is not sustainable. The water has not returned. The result is a sinking state. Here are some startling facts about California's groundwater depletion:

More than half of Earth's 37 largest aquifers are being depleted, according to gravitational data from the GRACE satellite system.

More than half of the world's 37 biggest aquifers are running dry, putting at risk the freshwater supplies of hundreds of millions of people, according to a NASA analysis. "The water table is dropping all over the world," said NASA water scientist Jay Famiglietti. 

On Day Zero, about three months from now, Cape Town will shut off its spigots, an almost unfathomable step for a major city of 4 million people. And it might presage something bleaker for other regions that are grappling with the challenges of strained infrastructure and the effects of rising temperatures.