article_snippet.sent: Humans never have lived on a planet that's 2 degrees Celsius (3.6 Fahrenheit) warmer than it was before we started burning fossil fuels, in the late 1800s, and climate experts say we risk fundamentally changing life on planet if we do cross that 2-degree mark.
article_snippet.sent: Think super droughts, rising seas and mass extinctions.
article_snippet.sent: Science has continued to raise red flags about 2 degrees of warming.
article_snippet.sent: The Arctic is expected keep melting, losing 30% of The Arctic annual average sea ice.• Certain crop yields in The United States, India and Africa are expected to decrease 10% to 30%.•
article_snippet.sent: And that's obviously affected by warming.
article_snippet.sent: The climate already has warmed 0.85 degrees since the Industrial Revolution.
article_snippet.sent: And we reasonably can expect to reach 1.5 degrees simply based on the pollution we're already putting into the atmosphere, even with "very ambitious mitigation action" to reduce carbon emissions, according to a 2014 report from the World Bank.
article_snippet.sent: The impacts of climate change already are being felt.
article_snippet.sent: If Our continue burning fossil fuels at the current rate, Our could hit 2 degrees of warming before midcentury.
article_snippet.sent: Scarier still, Our could hit 3 to 5 degrees of warming by 2100.
highlights_snippet.sent: Experts have raised red flags about the warming of planet by 2 degrees Celsius .
  