The Earth’s climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.
In the poor, violent Northern Triangle of El Salvador, Honduras and Guatemala, worsening floods, drought and storms are pushing a growing number of migrants north. Donald Trump thinks there’s an immigration crisis at the U.S.-Mexico […]
Novel UC San Diego study indicates global warming is costing US economy about $250 billion per year Date: September 24, 2018 Source: University of California – San Diego For the first time, researchers have developed […]