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Current debates on human cloning have been stimulated by questionable achievements. All the more reason for proponents of cloning for biomedical research to articulate the full range of potential benefits.
From the results of an annual Alaskan betting contest to sightings of migratory birds, ecologists are using a wealth of unusual data to predict the impact of climate change. John Whitfield rummages in the archives.
Sunlight can be harnessed by semiconductors to generate a fuel, hydrogen gas, from water. This approach will be impracticable until certain materials-related constraints are overcome: photochemists are on the case.
The social behaviour of many animals relies on their ability to use odour cues to distinguish among individuals. Studies of mice highlight the importance of urinary proteins in this complex signalling system.
Astronomers have now imaged a stellar microlens as it speeds across the sky. A similar effect will soon allow them to measure the mass of a lens, whether dark or luminous.
During development, many messenger RNAs are spread asymmetrically within cells. Surprisingly, in fruitflies the RNA signals and machinery used for distribution seem to be conserved in different developmental stages.
The evolution of an extended childhood had implications for human society and culture. New analyses of dental development in fossil hominins suggest that our lengthy growth processes arose quite late in evolution.
Kinesin proteins are nanoscale transport vehicles. Analysis of the structure and function of one such protein has revealed the secrets of its rapid movement.
The time taken for airline security checks can be reduced, thinks Daedalus, if the amount of luggage everyone takes is reduced. Clothing and laptop computers are on his list.
