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.
A petition urging European institutions to initiate moratoria against scientific collaboration with Israel has sparked further petitions and counter-petitions. Such boycotts are misguided and should be opposed in favour of constructive initiatives.
Some people's blood contains cells from a sibling. Others are two individuals rolled into one. Yet more carry a distinct mutation in only parts of their bodies. Helen Pearson investigates chimaerism and mosaicism.
Did the world freeze over some half a billion years ago? Two Harvard scientists think so, but convincing other climatologists is proving difficult. Naomi Lubick tracks the latest twists and turns in the snowball Earth debate.
The tide of genetic data threatening to swamp researchers has led a 'data warehousing' firm to tune in to science. Carina Dennis charts its move from airlines and banks to biology.
The discovery, in an undersea hot vent, of an organism that does not fit into any previously defined category of life marks the creation of yet another group within the mysterious Archaea.
Despite the ubiquity of liquid crystal displays, their glass 'sandwich' construction has remained unchanged. But a promising new technique could soon allow them to be mounted on almost any substrate.
Two regions of the brain in adult mammals contain stem cells that can generate new neurons. It seems that astrocytes — cells once viewed merely as padding in the brain — can stimulate the neuron-generating process.
Few clear answers have emerged from studies of the factors determining abundance of plants in particular settings. A new idea invokes the differing susceptibility of plant roots to damage from pathogenic soil microorganisms.
The possibilities offered by Bose–Einstein condensation for investigating the quantum world continue to stretch the ingenuity of physicists. Quasiparticles known as excitons have become promising subjects for research.
To understand cell signalling during development, we need to know how whole signalling networks — not just their individual components — are regulated. Two new studies highlight this point.
Investigation of the true behaviour of molecules in solution is this week's aim. It should be made possible by a novel form of fluorescence created with nitrogen trichloride.
