Earth Log: Heat, bad air are early this year
They are the first March violations since 2007. A late-winter warm spell gets most of the blame. At the same time, it's worth mentioning that the usual ozone suspects — Fresno, Clovis, Bakersfield and Sequoia National Park — are not violating the …
Many Forests Feeling the Heat from Climate Change
The world's longest ongoing annual record of forest data is in Sequoia and Yosemite national parks in California. For 30 years, the USGS has been tracking the birth, growth, health and deaths of some 30000 individual trees in these parks.