Once robust, populations of cougars (also known as mountain lions or pumas) have declined drastically across most of their range in the Americas. The population decline is due to the impact of extensive hunting and predator control, in addition to continued habitat loss and fragmentation. Cougars...

The house next door sits vacant, placed on the market after the last renter moved out. A succession of owners has knocked down walls, replaced carpeting and installed standard-issue appliances. Edging the exterior are shrubs from conventional landscaping palettes, including invasive species that...

Sometimes my most significant revelations are the annoying, kick-me-in-the-pants ones that follow a period of contented denial. One of those seismic shifts in thought came last year at a dinner party, when a man nearly half my age honed in on a flaw in logic I’d subconsciously buried. A plant...