Category Archives: Environmental Change

Three questions about climate change addressed by President Obama

In this year’s State of the Union address, President Obama made some very clear statements about climate change.  Much clearer and more direct than any other U.S. President we’ve had so far.  He even addressed “three questions about climate change” … Continue reading

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Large pulses of greenhouse gases from mangroves not fully appreciated (or understood)

On climate change, a recent study warns that we are not accounting for the full cost of altering mangroves and other coastal ecosystems. If you have ever visited a mangrove, you probably traveled by water.  Mangroves are a mixed-up tangle … Continue reading

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Tiny insect continues to take down hemlock forests across eastern US

Alternate blog title: When is it time to give up on one of your favorite species? Hemlock trees in eastern North America have been hit hard by a non-native insect, the hemlock woolly adegid. I’m fond of hemlock trees and … Continue reading

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If climate change leads to more powerful storms, greater ozone depletion will likely follow.

There’s a common misconception that climate change and the depletion of our ozone layer are closely linked. Actually, one survey reveals plenty of misconceptions about climate change: “Majorities of Americans … incorrectly believe that the hole in the ozone layer, … Continue reading

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McKibben’s climate change math

Over the past few decades, Bill McKibben has been one of the more persuasive environmental writers chronicling the changes to our planet.  His recent article in Rolling Stone magazine continues his run.  The main point … we haven’t made much … Continue reading

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A few trends in environmental optimism

Photo source: Smoke Control Lantern Slide Collection, ca. 1940s-1950s.  Title: Corner of Liberty and Fifth Avenues, Pittsburgh, PA.   Industrial smoke, what’s optimistic about that?  It’s the fact that many of our old industrial towns are now much healthier to … Continue reading

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Globalization is leading to greater biodiversity … in many regions, temporarily.

Most headlines about biodiversity follow the same storylines:  Species are going extinct at an incredible rate.   We are in the middle of the Earth’s sixth extinction event.  The number of endangered species keeps growing because of habitat loss and … Continue reading

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