2017 was an exceptional year for ordinary citizens who stepped up to come to their communities' needs and in the process, sent a clear message that anyone can make a difference. As we turn the calendar to 2018, we look to this list as inspiration for others to act as boldly.
By Julia Conley
A video of a starving polar bear led to calls for climate change denialists to confront the real-world effects of global warming this week. Taken by a Canadian conservationist and photographer and posted to social media, the video offered a stark visual of the drastic impacts of climate change that have already begun taking root.
By Joe McCarthy
The marshy expanses of the Everglades in Southern Florida contain hundreds of species of animals, including flamingos, alligators and manatees. Clusters of mangroves span its coastline, acting as ecosystem hubs, and if you take a boat through the region, you'll see countless plants that are native to the area.
But the Everglades, which have been around for more than 5,000 years, are collapsing, as saltwater intrudes from rising sea levels, pollution seeps from surrounding industries, invasive species kill off native species, bad water management techniques dry parts of the wetland, and climate change intensifies.
Glaciers in Asia could shrink to one-third of their current size by the end of the century even if warming stays below 1.5 degrees C, according to new research. A study published Wednesday in the journal Nature finds that glaciers in the Tibetan plateau experience higher levels of warming than the global average.
By Alex Kirby
Tropical storm Harvey is by any standard off the scale. Some parts of Texas have received in just over a week the rainfall they would normally expect in an entire year, and the storm is described as generating as much rain as would normally be seen only once in more than 1,000 years.
Exceptional as it is, Harvey is not a direct consequence of climate change, in the judgment of one leading climate scientist, professor Stefan Rahmstorf, co-chair of Earth System Analysis at the Potsdam Institute for Climate Impact Research (PIK) in Germany.
By Andy Rowell
By Ilissa Ocko and Mason Fried
Scientists watched with alarm this week as the fourth-largest ice shelf in Antarctica rapidly broke apart, causing an enormous, Delaware-size iceberg to float into the Southern Ocean.
The iceberg, which will likely be dubbed A68, weighs more than a trillion tonnes, has a volume twice that of Lake Erie, and is about 5,800 square kilometers in size—roughly the size of Delaware.