Endangered species

The amount of land available for future animal and plant sanctuaries may be less than thought because the scale of existing models is too large

Healthy mice have been cloned from the dead brain cells of animals frozen years ago – raising hopes of an endangered species "bank" (full text available to subscribers)

Healthy mice have been cloned from the dead brain cells of animals frozen years ago – raising hopes of an endangered species "bank" (full text available to subscribers)

Animals with short lifespans may have the edge on their often bigger rivals, which tend to be worse at tolerating temperature swings

Salmon have been tracked on their perilous journey to the ocean and it seems "fish ladders" do help them safely past hydroelectric dams

One thousand young salmon have been tracked on their risky journey from the American Rockies, past dams, and out to sea

One thousand young salmon have been tracked on their risky journey from the American Rockies, past dams, and out to sea