Â鶹Éç

Available for over a year

What each gene does – the first functional analysis of an organism's genome made using the nematode Caenorhabditis elegans. An altered bacteria that makes an extra amino acid engineered to test what would nature be like if lifeforms made 21 amino acids instead of 20. How water contaminated by cholera can be cleaned by filtering it through women's saris. Testing theories of early birds' flight.