This year, Florida has been dealing with a massive die-off of manatees, with 959 documented deaths as of Oct. 1. This has already been the deadliest year on record, and according to state estimates, further colder weather may cause another wave of deaths among the estimated 7,500 to 10,200 manatees along both Florida coasts.

Humanity's latest victim: Amid food scarcity, Florida manatees dying in record numbers

There is increasing concern among environmentalists that biodiversity is declining in Australia. Environmentalists have urged the Australian government to do more in order to stem a decline in biodiversity.

Environmentalists tell Australia, it 'needs more efforts to halt biodiversity decline'

Human activity is solely responsible for 96 percent of mammal extinctions in the past 126,000 years, according to a new study. In addition, the fossil records, as examined by scientists also indicate further extinctions of 558 mammal species in the near future.

Humans behind 96% mammal extinctions over 126,000 years: Study

Canada’s famous “grey ghosts”, or as how the most world knows them - caribou may disappear forever in the foreseeable future. The caribou is famous for sturdily navigating across the snow, and taking charge of cold forests.

'Grey ghost' caribous may disappear forever, courtesy predatory wolves and human logging