Imagine trying to design machines that will last forever, regardless of use or destination. Instead of those machines requiring a steady stream of spare parts (essentially impossible for space probes ...

Amanda Smith is a freelance journalist and writer. She reports on culture, society, human interest and technology. Her stories hold a mirror to society, reflecting both its malaise and its beauty.

Figure 1: The HAP1 DNA-binding domain, UAS CYC7 and UAS1 sequences, and experimental electron density map of the HAP1-18–DNA complex. One of the most striking findings of the comparison between the ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Leaf shapes play an important role in tree identification, providing key ...