The science behind the climate crisis

(CNN)Not sure how we found ourselves in this climate crisis? Carbon dioxide is called a “greenhouse gas” because of its ability to trap solar radiation in the Earth’s atmosphere like a blanket and heat up the planet — acting the same way a greenhouse keeps plants warm and growing. All of this carbon dioxide is warming the planet. CO2 naturally occurs in the atmosphere and without it, the planet would be too cold to support life. But human activity, like the burning of fossil fuels for energy, has increased the gas to dangerous levels, increasing the thickness of that blanket to the point that the Earth is heating up. Before the Industrial Revolution, the levels fluctuated naturally over many thousands …