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J. Besl

Posted inNews

Greener, Wetter Arabia Was a Crossroads of Early Human Migration

by J. Besl 7 October 202126 April 2022

Hand axes, hippo bones, and a stack of ancient lake beds show that arid Arabia experienced intervals of humid weather, spurring pulses of human migration over the past 400,000 years.

Floodwaters fill the streets of Port Arthur, Texas, after Hurricane Harvey in 2017.
Posted inNews

When Rivers Are Contaminated, Floods Are Only the First Problem

by J. Besl 10 September 202124 March 2022

As floods increase in frequency and intensity, chemicals buried in river sediments become “ticking time bombs” waiting to activate.

An aerial view of green algae mats near the western shore of Lake Erie
Posted inNews

Lake Erie Sediments: All Dredged Up with Nowhere to Grow

by J. Besl 31 August 202128 March 2022

Agriculture is a key contributor to the algae mats that plague Lake Erie. With so many fertilizers entering the lake, could sediment from the lake floor be used to grow crops instead?

A student takes notes in Arctic Alaska.
Posted inNews

Testing on the Tundra: NASA Snow Program Heads North

by J. Besl 27 July 202111 August 2022

With infrastructure, experience, and a slice of the world’s largest snow biomes, Alaska is an essential research destination for NASA’s multiyear SnowEx campaign.

A researcher stands above a large sinkhole, pouring green dye into draining water.
Posted inNews

Dyes and Isotopes Track Groundwater from Sink to Spring

by J. Besl 28 June 202116 February 2022

The hydraulic connection between a sinkhole and a natural spring—the longest and largest yet documented—could help reduce the guesswork in mapping karst aquifers.

British Columbia forestry staff on ladders picking spruce cones in a seed orchard managed by the province
Posted inNews

Planning and Planting Future Forests with Climate Change in Mind

by J. Besl 7 June 202128 October 2022

The climate is warming too fast for some trees to catch up. Planting seeds from warmer regions can bolster future forests, but that requires a significant shift in forestry practice.

A house built on permafrost, now thawing, tilts dramatically.
Posted inNews

Mapping the People, Places, and Problems of Permafrost Thaw

by J. Besl 21 April 20212 September 2022

By combining demography data with permafrost maps, researchers provide a first count of the population on permafrost and predict its imminent decline.

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