North America

Dearth of milkweed not the monarch butterfly's main threat

Lack of milkweed is only a problem for caterpillars during the summer. Monarch butterflies face the most pressing risks in autumn.
22 April 2016

Bat-sound library tracks biodiversity

Scientists have compiled the biggest known library of bat sounds in an effort to identify and conserve rare species.

14 April 2016

Great monarch butterfly migration mystery solved

Scientists have built a model circuit that solves the mystery of one of nature's most famous journeys - the great migration of monarch butterflies from Canada to Mexico.

14 April 2016

Matemáticas para explicar el largo viaje de las mariposas monarca

Cuando llega el otoño, las mariposas monarca emprenden el mayor viaje de sus vidas. Vuelan entre Canadá y México.

14 April 2016

The vaquita could go extinct this year as totoaba poaching continues to increase

China’s demand for swim bladders from a giant Mexican fish called the totoaba is putting the species at risk.

13 April 2016

Más muertes y afecciones de pulmón en bebés delfín por el petróleo de BP

La mayoría de los fetos y de los delfines recién nacidos que quedaron varados en las áreas afectadas por el vertido de petróleo que comenzó el 20 de abril de 2010 en el Golfo de México presentaban

12 April 2016

Green sea turtles in Florida and Mexico are no longer endangered

'This will help up protect and conserve green sea turtles more efficiently and effectively, so that we can achieve our goal of recovering the species'
06 April 2016

Polar bears losing weight as Arctic sea ice melts, Canadian study finds

Between 1984 and 2009 the weight of female bears in Ontario fell by over 10% while climate change meant they had 30 fewer days a year to hunt seal on ice

05 April 2016

Concern as US bat-killing disease jumps to west coast

Wildlife officials say they are extremely concerned after a disease that has killed millions of bats has arrived on the Pacific coast of the US.

31 March 2016

Endangered whales in Washington's Puget Sound to get individual records

The records will include data on behavior, reproductive success, and skin diseases and will be used to monitor individual health as well as overall trends

30 March 2016