Past Global Changes Horizons Vol #2

Page 80

doi.org/10.22498/pages.horiz.2.80

Millions of years ago, there were times when the Earth was covered in ice...

At other times in Earth's past, there was no ice at all.

Today, humans are releasing so many greenhouse gases* into the atmosphere, and at an alarming rate, by burning fossil fuels, cutting down forests, farming livestock... All these gases trap heat and are warming the Earth considerably!

80

PAGES HORIZONS • VOLUME 2 • 2022


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