From 50,000 to 15,000 years ago, during the last ice age, Earth's climate wobbled between cooler and warmer periods punctuated by occasional, dramatic ice-melting events. Previous research has ...
Recent and major shifts in international environmental policies and programs have precedent in history, but the scale and urgency of their potential impacts present a planetary risk that’s new, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results