You can find academic and industrial groups doing some relevant work, but there isnt a focus on building complex molecular systems. In that respect, Japan is first, Europe is second, and were third. – K. Eric Drexler
Got good news and bad news for you, Mr. President. The good news is that Chief Justice John Roberts just saved your legacy and, perhaps, your presidency by writing for the Supreme Court majority to rule health care reform constitutional. – Ron Fournier