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Articles on Trees

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This direct air capture plant in Iceland was designed to capture 4,000 metric tons of carbon dioxide per year. Climeworks 2021 via AP Photos

How not to solve the climate change problem

A climate scientist looks at what works and some popular ideas that aren’t as cheap or effective as people hope.
Concrete and asphalt roads, and other built materials readily absorb, store and release heat, raising city temperatures, a phenomenon called the urban heat island. (Pixabay)

Small green spaces can help keep cities cool during heat waves

During heatwaves, the highest temperatures are often found in urbanized areas. Small green spaces are often overlooked as a way to cool urban areas.
Although it is important to have a diversity of tree species in urban landscapes, planting and protecting taller species should be strongly encouraged. (Shutterstock)

Large trees are essential for healthy cities

There is a growing interest in planting small trees in urban areas. However, large trees have significant advantages.
Trees scorched by the Caldor Fire smoulder in the Eldorado National Forest, Calif., Sept. 3, 2021. (AP Photo/Jae C. Hong)

Planting trees can help the climate, but only if we also stop burning fossil fuels

Planting trees and preventing deforestation can store carbon in nature, but the effect may only be temporary. If we also eliminate emissions from fossil fuels, even this temporary effect is important.
Ragweed pollen, instigator of headaches and itchy eyes across the U.S. Bob Sacha/Corbis Documentary via Getty Images

Pollen season is getting longer and more intense with climate change – here’s what allergy sufferers can expect in the future

Rising temperatures mean longer, earlier pollen seasons, but the bigger problem is what carbon dioxide will do to the amount of pollen being released. A 200% increase is possible this century.

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