No one knows exactly how much Earth's climate will warm due to carbon emissions, but a new study this week suggests scientists' best predictions about global warming might be incorrect.

On the heels of his discovery in Montana of the first trace fossil of a dinosaur burrow, Emory University paleontologist Anthony Martin has found evidence of more dinosaur burrows – this time on the other side of the world, in Victoria, Australia. The find suggests that burrowing behaviors were shared by dinosaurs of different species, in different hemispheres, and spanned millions of years during the Cretaceous Period, when some dinosaurs lived in polar environments.

U.S. municipal governments are showing leadership by voluntarily accounting for and reducing greenhouse gas emissions resulting from their operations. They also recognize the huge potential to influence long-term reductions from the residents and businesses in their communities, according to a new report.

The ability of plants to tell the time, a mechanism common to all living beings, enables them to survive, grow and reproduce. In a study published in the latest issue of the prestigious journal Ecology Letters, an international team has studied this circadian clock from a molecular viewpoint and has found an ecological implication: it makes climate change scenarios and CO2 level figures more accurate.

The vast amount of carbon stored in the arctic and boreal regions of the world is more than double that previously estimated, according to a study published this week.

Two new reports examining climate change adaptation and policy making across Europe will be launched today in Brussels in the presence of Peter Gammeltoft, Head of Unit 'Protection of Water & Marine Environment' at the European Commission. The preliminary conclusions of the research were used in the European Commission's White Paper on climate change, published in April 2009.

Two University of the Alaska Fairbanks researchers are among key contributors to a new national report that details visible effects of climate change in the United States and how today's choices stand to affect the future.

As rapidly rising temperatures in Africa threaten to scorch local varieties of maize and other food staples, the food security of many Africans will depend on farmers in one country gaining access to climatically suitable varieties now being cultivated in other African nations, and beyond, according to a peer-reviewed study published in Global Environmental Change.

Biologists have for several years modeled how different species are likely to respond to climate change. Most such studies ignore differences between populations within a species and the interactions between species, in the interest of simplicity. An article in the June issue of BioScience, by Eric Post of Pennsylvania State University and five colleagues, shows how these limitations can be avoided.

300 million people are now directly affected by climate change, according to the first comprehensive study of its social impacts. Climate change claims 300,000 lives a year, and costs $125 billion, equivalent to the entire aid budget to the developing world.

Author and democracy activist Frances Moore Lappé says we already know how to solve the pressing issues of our time, such as climate change and world hunger.

Research led by the University of Leicester suggests people today and in future generations should look to the past in order to mitigate the worst effects of climate change.