Tag Archives: Sea level

Redwoods


Redwoods

Redwoods are the tallest living trees, often exceeding 300 ft (90 m) in height. Nearly exterminated by the ice sheets of the glacial ages, redwoods are found only in a narrow strip near the Pacific coast of the northwest US. They take up to 500 years to reach maturity, and some are known to be more than 1,500 years old. As redwoods age, their lower limbs fall away, leaving a columnar trunk that can reach a diameter of more than 20 ft (6 m). What is the largest tree in the world? More… Discuss

West Antarctic Ice Sheet Melt Past Point of No Return


West Antarctic Ice Sheet Melt Past Point of No Return

Experts say that a large section of the West Antarctic Ice Sheet has reached a state of irreversible retreat. Its continued melting will raise sea levels as much as 4 ft (1.2 m) over the next few hundred years and could trigger a chain reaction of additional melting of nearby parts of the ice sheet, causing sea levels to rise even more. Even if we were to curb our greenhouse gas emissions, we could not now reverse or even halt the melt. The best we could hope for is to slow the ice loss. More… Discuss

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NEWS: PREPARE THE PADDLES: HUMAN ACTIVITIES CAUSING CITIES TO SINK


Prepare the Paddles: Human Activities Causing Cities to Sink

Human activities are speeding the sinking of major coastal cities around the globe, contributing to more frequent, severe, and protracted floodingLand subsidence can occur naturally, but human activities have accelerated the process in some parts of the globe, leading the land there to descend 10 times faster than sea levels are rising. Tokyo, for example, sank two meters as a result of decades of groundwater extraction. Venice suffered similar subsidence until groundwater extraction was halted there in recent years. Unless action is taken, Jakarta, Ho Chi Minh City, and Bangkok, among other cities, will sink below sea level. More… Discuss

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