According to researchers from ETH Zurich and the University of Miami, some of the largest ocean eddies on Earth are mathematically equivalent to the mysterious black holes of space. These eddies are so tightly shielded by circular water paths that nothing caught up in them escapes.
Observing animals in the wild while not disturbing them is a classic challenge for behavioral ecologists. But as a new study shows, the use of remotely operated robots to observe penguins and seals in their natural habitats can result in significantly lower and shorter stress responses.
For the new study, Yvon Le Maho of the University of Strasbourg in France and colleagues sought to find out if remote-controlled rovers could substitute for intrusive human observers. Indeed, efforts to study these sensitive creatures have never been more important. The latest research suggests that global warming will reduce Antarctica's emperor penguin population by nearly 20% over the next 80 years.
Amazon Milk Frogs, also known as Mission Golden-eyed Tree Frogs or Blue Milk Frogs, were first found in Rio de Janeiro's Maracanã River. The name "Milk Frog" refers to the poisonous, white, milky secretion that this frog secretes when threatened. But what about that blue mouth? This species is most active at night and is known for its loud vocalizations.