Earth Day ’21: environmental issues past and present still present challenges

Trib Live – Fifty-one years after the founding of Earth Day, with the first on April 22, 1970, the manmade pollution and resulting problems created by global warming and climate change remain the biggest threat to the planet, environmental scientists say. “Certainly, the biggest concern is climate change, because it has so many possibilities of impacting our environment,” said Caryl Fish, environmental sciences professor at Saint Vincent College near Latrobe.

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