Turtle Talk: Exactly how do turtles communicate? Turtles comprise one of the oldest living groups of reptiles, with hundreds of species found throughout the world. Many have been well-researched, and scientists know very specific things about their various evolutionary histories, metabolic rates, and the ways in which their sexes are determined. But there was one very obvious thing that has been largely left unknown by science until very recently. Turtles can make sounds.
Do "Fat taxes" work? Specific taxes on sugar, salt or fat do cause reductions in consumption, the European Commission found in a new report. But higher taxes may also merely encourage consumers to go for cheaper products, it warned.
The precise impact of such "fat taxes" on the competitiveness of the European agriculture and food sector still needs to be fully assessed, the report added.
Ozone + Rising Temperatures = Problems for Food Security A new study shows that interactions between increasing temperature and air pollution can be quite significant when it comes to addressing food security. Conducted in part by researchers at MIT, a study looked in detail at global production of four leading food crops — rice, wheat, corn, and soy. It predicts that effects will vary considerably from region to region, and that some of the crops are much more strongly affected by one or the other of the factors
Industrial lead pollution beat explorers to the South Pole by 22 years Norwegian explorer Roald Amundsen became the first man to reach the South Pole in December of 1911. More than 100 years later, an international team of scientists led by Joe McConnell of Nevada's Desert Research Institute (DRI) have proven that air pollution from industrial activities arrived long before. Using data from 16 ice cores collected from widely spaced locations around the Antarctic continent, including the South Pole, McConnell's team created the most accurate and precise reconstruction to date of lead pollution over the Earth's southernmost continent.
Coffee Rust in Guatemala Outside the northern Guatemalan town of Olopa, near the Honduran border, farmer Edwin Fernando Diaz Viera stands in the middle of his tiny coffee field. He says it was his lifelong dream to own a farm here. The area is renowned for producing some of the world's richest Arabica, the smooth-tasting beans beloved by specialty coffee brewers.
"My farm was beautiful, it was big," he says.
But then, a plant fungus called coffee rust, or roya in Spanish, hit his crop.
"Coffee rust appeared and wiped out everything," he says.