The decades-long tracking of flying birds reveals that body size and flight styles determine the scale of birds' migration, as predicted by the aerodynamic theory of bird flight. A researcher compiled the migratory tracks of 196 species of flying birds recorded by electronic tags during the last few decades.
Judges say Spanish state has responsibility for cultural heritage and Catalan parliament has exceeded its authority
Spain’s constitutional court has overturned Catalonia’s controversial ban on bullfighting, imposed by the regional government in 2010.
Nine of the 12 judges ruled that the “preservation of common cultural heritage” was the responsibility of the state and the Catalan parliament had exceeded its authority in banning what the court described in a statement as “one more expression of a cultural nature that forms part of the common cultural heritage”.
The court conceded that Catalonia could “regulate the development of bullfights” or
Peru’s rare and endangered Titicaca water frogs are in even more trouble now, after 10,0000 of them turned up dead along the Coata River in Puno.
The river, which feeds into Lake Titicaca, serves as a water source for a number of villages in the region, but it is also used as a dumping site by locals, according scientists in the field working with the Denver Zoo to preserve the endangered amphibians.
“We’ve been following these frogs since the beginning of their decline in 2007,” Tom Weaver, an assistant curator at the zoo, told Fox News Latino.
About a week ago, approximately 10,000 dead “scrotum” frogs were discovered by Peru’s wildlife and forestry service, Serfor.
The Titicaca frog (Telmatobius culeus) is listed as critically endangered by the International
A family of common industrial compounds called perfluoroalkyl substances, which are best known for making carpets stain resistant and cookware non-stick, has been under scrutiny for potentially causing health problems. Focusing on one of the family's sub-groups, scientists report for the first time that some dolphins, fish and birds have perfluoroalkyl phosphinic acids (PFPIAs) in their blood.
Studies on PFPIAs have been limited, but some have detected the compounds in human