The baffling ecological disaster that's killing America’s freshwater mussels

Freshwater mussels are the kind most people don't even know exist. They live for decades—more than a century in some cases.
Scientific American

Freshwater mussels are disappearing—and no one is really sure why

Biologists are racing to save America’s freshwater mussels—the water-filtering keystone species that once filled the ...
Animal Welfare Institute

Son, J., Lee, W.-D., Kim, H.-J. et al. 2022. Effect of providing environmental enrichment into aviary house on the welfare of laying hens. Animals 12(9), 1165.

This study aimed to determine the effects of providing environmental enrichment materials—pumice stone and alfalfa hay—to laying hens in the aviary system. A total of 2196 40-week-old Hy-Line Brown ...