Heat waves over the ocean have ballooned and are wreaking havoc on marine life

Heat waves over the world’s oceans are becoming longer and more frequent, damaging coral reefs and creating chaos for aquatic species. A study published Tuesday in the journal Nature Communications found a 54 percent increase in the number of days in which heat waves have cooked the oceans since 1925.

(Institute of Atmospheric Physics)

The rise in these marine heat waves has occurred while ever more heat is stored in the ocean because of accumulating greenhouse gases in the atmosphere. The ocean heat content in 2017 was the highest in recorded history, noted Kevin Trenberth, a climate scientist at the National Center for Atmospheric Research. Trenberth said in an email that ocean heat waves will necessarily increase given the building stockpile of heat, which has been measured from the surface down to more than a mile deep (2,000 meters).

Read Jason Samenow’s story from The Washington Post - “Heat waves over the ocean have ballooned and are wreaking havoc on marine life.”

Conflagrations increase as temperatures rise

Every summer, and increasingly every spring, we're frightened by the onset of another bushfire season. Habitats, properties and lives are at stake.

It doesn't help that new research points to 'extreme' blazes—fires that burn more than 100,000 hectares over the course of a week or so—becoming more frequent.

A century ago, such conflagrations hit Victoria every 15 years. Since 2000 that interval has shrunk to between one and five years

Visit Radio National for the story - “Extreme bushfires and why they're becoming more frequent in Australia.”