Brian Ekstrom and Lance Downing pulling the beach seine to collect juvenile fish at a restoration site on the lower Columbia River A routine dredging project on the Lower Columbia River has become a major long-term experiment to see whether dredged sediment can be used to restore lost wildlife habitat.In October 2020, engineers pumped 225,000…

Inside the limestone chambers of South Africa’s Wonderwerk Cave, small fragments of bone have been telling a story that is only now becoming legible. The material itself is unremarkable at first glance, scattered, fragile, long stripped of any obvious context. Yet when placed under particular wavelengths of light, some of it behaves differently, as though…