Category Archives: Extinction

Volcanic activity, declining ocean oxygen triggered mass extinction of ancient organisms

Global climate change, fueled by skyrocketing levels of atmospheric carbon dioxide, is siphoning oxygen from today’s oceans at an alarming pace—so fast that scientists aren’t entirely sure how the planet will respond. Their only hint? Look to the past. In a … Continue reading

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Sixth Mass Extinction is here: Humanity’s existence threatened

There is general agreement among scientists that extinction rates have reached levels unparalleled since the dinosaurs died out 66 million years ago. However, some have challenged the theory, believing earlier estimates rested on assumptions that overestimated the crisis. The new … Continue reading

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