SUMMIT CAMP, GREENLAND-- Drs. Jochen Stutz and Jennie Thomas from UCLA are up at Summit looking for halogens which could be contributing to the destruction of ozone, here at Summit and in other polar areas. The instrument they use for this is a large telescope... {Read More »}

NOATAK RIVER, BROOKS RANGE, ALASKA-- Yesterday we floated through Noatak Canyon, but not before stopping on several occasions to relocate and rephotograph old Philip Smith photos. I added these excursions partly out of curiosity, but partly to extend the record of vegetation... {Read More »}