There aren't always more fish in the sea. Growing community concern about over-fishing has prompted scientists to investigate the health of populations in Australian waters and to assess the impact of fishing on broader ecosystems, including the likelihood of other fish being caught accidentally.
Climate change is a growing threat to tourism, from thawing ski resorts to coral reefs hit by warmer seas, and the industry itself should do more to curb its soaring greenhouse gas emissions, a study showed on Tuesday.
The Great Barrier Reef Marine Park Authority has announced it will allow the dumping of three million cubic metres of dredge spoil from the Abbot Point port redevelopment within the marine park’s boundaries…
Without a question, we are living in an urban era. More people now live in cities than anywhere else on the planet and I’ve repeatedly argued that cities are our most important economic engine. As a result of these shifts, we’re seeing megacities at a scale the world has never seen before.
Option: Inland waterAs the climate shifts, rivers will both flood and dry up more often, according to the latest report from the Intergovernmental Panel on Climate Change. Shortages are especially likely in parts of the world already strapped for water, so political scientists expect feuds will become even more intense. To track disputes worldwide, researchers at Oregon State University spent a decade building a comprehensive database of international exchanges—-both conflicts and alliances—over shared water resources. They found that countries often begin disputes belligerently but ultimately reach peaceful agreements. Says Aaron Wolf, the geographer who leads the project, “For me the really interesting part is how even Arabs and Israelis, Indians and Pakistanis, are able to resolve their differences and find a solution.”
Scientists have issued a new warning to the world’s coastal megacities that the threat from subsiding land is a more immediate problem than rising sea levels caused by global warming.
A new paper from the Deltares Research Institute in the Netherlands published in April identified regions of the globe where the ground level is falling 10 times faster than water levels are rising - with human activity often to blame.
In Jakarta, Indonesia’s largest city, the population has grown from around half a million in the 1930s to just under 10 million today, with heavily populated areas dropping by as much as six and a half feet as groundwater is pumped up from the Earth to drink.
The same practice led to Tokyo’s ground level falling by two meters before new restrictions were introduced, and in Venice, this sort of extraction has only compounded the effects of natural subsidence caused by long-term geological processes.
Indonesia has for the first time surpassed Brazil in clearing tropical forests and losses are accelerating despite a 2011 moratorium meant to protect wildlife and combat climate change, scientists said on Sunday.
"Ethiopia is three years from completing a dam to control its headwaters, and while Egypt points to colonial-era treaties to claim the water and to stop the project, the question remains as to who own the Blue Nile."
"The largest reservoir in the U.S. falls to its lowest water level in history, Nevada State Sen. Tick Segerblom introduced a bill title and issued a press release on July 8calling for an 'independent scientific and economic audit of the Bureau of Reclamation’s strategies for Colorado River management.'"
This week’s history-making, bad-news event at Lake Mead has already triggered lots of news stories, but almost all of these stories focus on the water supply for Las Vegas, Phoenix and California. But what about the health of the river itself?
Whether it be for actions taken by the EPA or the State Department, congratulations to the Obama Administration are due for leadership on both carbon emissions and marine conservation. Let these efforts be the first of many....