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Malignant melanoma cells can resist committing suicide when attacked by chemotherapy. The explanation lies in the discovery that a key gene in the cell-death pathway is switched off in this cancer.
Grains of the mineral zircon have survived from way back in Earth's history. Analysis of these grains provides information on the state of our planet as long as 4.4 billion years ago.
The climate instability of glacial times probably resulted from abrupt switches in ocean circulation. A computer-model simulation provides the first glimpse of the dynamics involved.
It is not easy finding a worthy successor to highly refined microchip technologies. But electronic devices built from molecular-scale components are fast becoming a good bet.
Investigations of a neurotransmitter receptor required for 'background' neuronal inhibition in mice show the importance of such inhibition in keeping neuronal excitability under control.
Quantum entanglement between two particles is a spooky connection that means measuring one has an instant effect on the other. Connecting many atoms in this way would be the first step towards a quantum computer.
Did advanced mammals evolve on the southern continents and then move north? Not according to a new study, which concludes that such mammals evolved in both the south and the north.
In vivo studies of a pair of co-stimulatory molecules in the immune system of mice may further our understanding of allergic reactions and inflammatory immune responses in humans.
The standard DNA-replicating machinery cannot copy damaged DNA, so SOS enzymes come to the rescue. It now seems, at least in some bacteria, that different enzymes are required for different types of damage.
Giant planets like Jupiter need a large reservoir of gas to grow to full size. New observations indicate that such planetary nurseries last twice as long as previously thought.
