The Dodo

A decade-long study found that greater one-horned rhinos reintroduced to Manas National Park in India are successfully having calves, an encouraging sign for a population that was nearly wiped out by poaching in the 1990s.

Researchers recorded 35 rhino births between 2012 and 2022, including calves born to rhinos that had been relocated to the park and to rhinos born there after the reintroduction effort began. Conservationists say the growing population is a positive sign, though continued habitat management and protection will be important for the species' long-term recovery

A study estimates that extreme rainfall and landslides in Indonesia's Batang Toru ecosystem may have contributed to the loss of about 58 critically endangered Tapanuli orangutans. Researchers say that would represent roughly 7% of the species' remaining global population.

Scientists are calling for stronger protection of the orangutans' remaining habitat, which is already under pressure from development and fragmentation. Fewer than 800 Tapanuli orangutans are believed to remain in the wild.

Greenland sharks can live for more than 400 years, making them the longest-living vertebrates known to science. Despite their remarkable lifespan, researchers still don't know basic details about the species, including where they reproduce or how many remain in the wild.

Scientists say the sharks' slow pace of life may also make them especially vulnerable to modern threats. Greenland sharks mature very slowly and may not reproduce until around 150 years of age, making it difficult for populations to recover from losses caused by accidental capture in commercial fishing operations and other environmental pressures.