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Extinction rates have been overestimated but many species still on track to share the dodo’s fate. flickr

Debate rages over extinction rates paper

A paper casting doubt on a widely used method of calculating extinction rates has fuelled furious debate in scientific circles, with some arguing it ignores important evidence and others saying it has…
Vast numbers of species remain undiscovered, researchers found. Photo: Cyril Blazy http://www.fotopedia.com/users/blazouf.

Half the world’s amphibians yet to be discovered

At least 48% of amphibians and 3% of land mammals globally remain undiscovered but could go extinct before they are found, new modelling shows. A mathematical model used by researchers from from Princeton…
New research suggests drugs that treat both depression and sleep disorders yield better results. Photo: http://www.flickr.com/photos/remaraphotography.

Tackling depression and poor sleep with one drug

Certain drugs that target sleep disorders can also act as very effective anti-depressants, paving the way for new approaches in the treatment of major depression, according to a new paper by Australian…
More extreme hot weather events are on the way, say the world’s top climate scientists. Photo: http://www.flickr.com/photos/lindenbaum.

More deadly heat waves coming, climate scientists warn

The world’s top climate scientists have warned that the heat waves that have killed thousands of people during recent summers are to become more common and more deadly. The Intergovernmental Panel on Climate…
Genetic testing could help breast cancer patients decide if chemotherapy is worth trying. Photo: http://www.flickr.com/photos/yongjiet.

Could a test predict if chemo will work?

Genetic testing could help predict the likelihood of survival following chemotherapy for recently diagnosed breast cancer patients, a new study has found, but experts say the small sample size of the study…
People power and social media helped win a campaign to protect medical research from cuts. Photo: AAP.

How the war was won: the campaign to stop medical research cuts

One day in April, Walter and Eliza Hall Institute of Medical Research director Douglas Hilton called his communications manager, Penny Fannin, into his office. “He said he’d heard significant cuts were…

Climate change crimps crop output: study

Climate change has caused global corn and wheat production to drop between 3% and 5% over the last 30 years, a new study has found. Customers have paid the price, with the cost of food rising 6% since…