The selective logging of trees in otherwise intact tropical forests can take a serious toll on the number of animal species living there. Mammals and amphibians are particularly sensitive to the effects of high-intensity logging, according to researchers who conducted a meta-analysis of almost 50 previously published studies from around the world.
Scientists have revealed how massive, meat-eating, ground-dwelling dinosaurs evolved into agile flying birds: they just kept shrinking and shrinking, for over 50 million years.
A study looked at panther behavior at two Florida cattle ranches and has confirmed calf predation as a problem. The Florida panther nearly died out, with an estimated population thinning to just 20 to 25 panthers by 1995, with conservation efforts helping the cat's numbers grow to an estimated 100 to 160 by 2012. But the panthers' comeback has not always been helpful to cattle ranchers.