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317 news posts in Earth and beyond

Climate action

21 Feb 2025

Hurricane-proofed downtown skyscrapers unexpectedly vulnerable to ‘bouncing’ winds

In May 2024, a type of windstorm called derecho caused considerable damage to the facades of Houston’s tall buildings, which had been designed to withstand stronger, hurricane-strength winds. In contrast, hurricane Beryl in July 2024 caused only minimal damage to the same buildings. Researchers analyzed the damage from this derecho and used wind-tunnel modeling to simulate its unique wind loading effects on miniature tall buildings. They concluded that besides interference between groups of tall buildings, the unique characteristics of local events like derechos worsened the structural damage. This finding has implications for the design of future tall buildings and urban planning.

Climate action

12 Dec 2024

Sleepers made from recycled plastic could make railways even more eco-friendly

Part of the greenhouse gas (GHG) emissions from railways lie in the energy used to produce and maintain the necessary infrastructure. Researchers from Finland here showed the feasibility of using more eco-friendly railway sleepers from two types of recycled plastic, liquid packaging board and acrylonitrile butadiene styrene. Carbon emissions saved each year by phasing out concrete sleepers and replacing them with such recycled plastic could amount to the equivalent of heating for 1,200 Finnish households.

Climate action

18 Oct 2024

Scientists create new overwintering sites for monarch butterflies on a warming planet

Migrating monarch butterflies depend on mountain forests of sacred firs in Mexico as overwintering sites. These forests are under threat from global warming. But researchers from Mexico have now shown that seedlings derived from their original range can be transplanted successfully to a new site further east, on the higher and colder volcano Nevado de Toluca. The resulting new stand of sacred firs could ultimately serve as the overwintering sites of the future.