A manatee swims at Blue Spring State Park in Orange City, Florida. A dead manatee was recently found in New Jersey, far north of its usual winter habitat. (Blue Spring State Park) At a Glance The manatee washed up on a beach near Cape May, New Jersey.The large marine mammals can't tolerate temperatures below 68 degrees for an extended period of time.More and more species are being seen in unusual areas, possible due to climate change or habitat loss. A...

A pod of narwhals swims in northern Canada. The FBI is looking for information that could help recover a narwhal tusk stolen at least 40 years ago. (Kristin Laidre/NOAA) At a Glance The FBI is looking for information that could help lead to the recovery of a missing narwhal tusk.The tusk was originally gifted to a Navy admiral by the famous Arctic explorer Robert Edwin Peary.Narwhals are among the most unique mammals in the ocean. The FBI is on the...

Climbers on Mont Blanc in 2016. (PHILIPPE DESMAZES/AFP via Getty Images) At a Glance At least 20,000 people attempt to summit Mont Blanc each year.It's the highest peak in Western Europe.Warmer temperatures are making the climb more hazardous. More restrictions will be placed on climbers hoping to scale Mont Blanc in France amid mounting concerns over environmental impacts and the effects of climate change. French President Emmanuel Macron announced the Thursday during a visit to Chamonix near Mont Blanc in...