Sargassum, a type of marine algae, is washing up en masse on Caribbean beaches, closing them down to the public. The same sargassum is here in Miami, lining Miami beaches.

A resident said his kids don't want to go swimming at that location because there are so many dead fish in the water.

A mysterious malady has killed off nearly one-fifth of Colorado's aspens. But forest ecologists have struggled to explain the widespread die-off, known as Sudden Aspen Decline.

Nearly 80 million people in the United States remained under a heat advisory or warning Tuesday, with scorching temperatures and humidity expected through the Fourth of July.

Mini algae blooms are a regular occurrence in the western basin of Lake Erie. They pop up early in the season and usually dissipate before...

Gray whale (Eschrichtius robustus) found dead on the beach near Kivalina.

Burying Beetle (genus Nicrophorus) Found on McDonald Spit in Seldovia.

The town of Lakselv, Norway, located near the Banak Peninsula and more than 300 miles north of the Arctic Circle in far northern Europe, recorded a temperature of 91 degrees on Wednesday and a high of at least 90 degrees twice this week. That's roughly 30 degrees above average for this region of the world.

The biggest challenges for whales is the buildup of toxic chemicals in their bodies and the shrinking runs of Chinook salmon, their primary prey.

Unusually colored caterpillar in area identified as Bedstraw Hawkmoth (Hyles gallii)

A rare sighting near the confluence of the Russian River.

They may all look the same when swatting them away, but they are an incredibly varied insect — latest research shows there are a whopping 39 species present in the Northwest Territories..

The city has seen 114 millimetres of precipitation so far this June, more than the average for the entire summer.

Quriyat, Oman just blasted past a 24-hour minimum-temperature record, beating the previous "highest low," which was also set in Oman.

Despite facing drastic increase in the number of ticks being reported in Niagara, the region’s acting medical officer of health says the chance of getting Lyme disease remain relatively low.

It was a terrifyingly close call for a family with a three-month-old baby last weekend, when their sled plunged through the ice.

The foul-smelling seaweed is back yet again.

The Working Group on Marine Mammal Unusual Mortality Events has closed both UMEs. What caused those events remains a mystery.

At this time of year, there has never before been such a complicated ice condition around Russia’s offshore Arctic oil platform «Prirazlomnaya».