Previously unknown poisonous compounds isolated from a new species of mushroom may be responsible for the deaths of hundreds in China, but precisely how the fungus killed its victims is not clear.
Previously unknown poisonous compounds isolated from a new species of mushroom may be responsible for the deaths of hundreds in China, but precisely how the fungus killed its victims is not clear.
Homing pigeons and tree swallows are being used to monitor pollution in cities and track environmental clean-up work at former industrial sites.
Rodents fed all-you-can-eat diets may be skewing experimental results.
The California condor is being threatened by lead bullets that it eats in the carcass of hunted animals.
Advances in cell-culture technologies are paving the way to the complete elimination of animals from the laboratory.
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