MarketWatch: The oceans are warmer and more acidic than ever before in recorded history, and likely ever since modern humans evolved. That should worry everyone alive today.
Why? As go the oceans, so goes the health of the globe. Oceans produce more than half the oxygen we breathe, and are critical to regulating the climate. They have absorbed at least 90% of the heat from global warming since 1970, and continue to absorb 2 billion tons of carbon dioxide every year, equal to the weight of all the oil carried...