Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Despite disagreement between governments about tackling climate change, initiatives are bubbling up from below. With help from researchers and the markets, citizens can be made more aware of how to help reduce carbon dioxide emissions.
A few physicists have spent decades searching for the rarest events in the Universe — and seen nothing. But their enthusiasm for the hunt is undimmed. Geoff Brumfiel asks what keeps them going.
A team in Seoul has stolen a march with its work towards human therapeutic cloning. The researchers have been fêted, but an ethical controversy may threaten their work. David Cyranoski investigates.
The first images of an extragalactic object to have been captured using infrared interferometry reveal the doughnut-shaped cloud of dust that obscures the heart of a nearby active galaxy.
Insulin-producing β-cells in the adult pancreas were thought to derive from pancreatic stem cells. But it seems that they arise abundantly from β-cells themselves, offering a new outlook on regenerative medicine.
Swift-swimming, open-ocean hunters such as mako sharks and tunas need a big engine. Despite their long separation in evolutionary terms, the internal drive systems adopted by these fishes are much the same.
The solubility of oxygen in molten iron increases at high temperature. Could this explain why Earth's mantle is poor in iron oxide, whereas the mantle of Mars, which formed under cooler conditions, is not?
People vary naturally in a protein called caspase-12, and hence in their susceptibility to harmful inflammation. This discovery highlights the balance between the protective and destructive effects of immunity.
Prions are clumps of misshapen proteins that can be passed between cells without the need for genetic intermediaries. The parts of the proteins that account for such infectivity are now being dissected.
Protein arrays and protein assays in parallel are enabling researchers to look at protein interactions and activity on a large scale, as Lisa Melton finds out.
