From the beginning, life’s story has been written in a DNA code of four letters, G, T, C and A, naming the molecules that pair up in the DNA helix. Scientists at the Scripps Research Institute in California now have modified common E coli microbes to carry an enhanced payload of genetic material which, they say, will ultimately allow them to program how the organisms operate and behave. Their work is aimed at making bugs that churn out new kinds of proteins which then can be harvested and turned into drugs to treat a range of diseases. The researchers say the same technology might also lead to new kinds of materials. Keep it coming.