Republicans in Congress spearheaded by Alaska Congressman Don Young, a keen hunter, have repealed Obama-era restrictions on hunting predators in National Wildlife Refuges in Alaska. Host Steve Curwood discusses how this will affect wolves and bears with Alaska Dispatch News reporter Erica Martinson.

We take note of some recent thoughts from attentive listeners.

Hundreds of thousands worldwide turned out for the more than 600 Marches for Science on Earth Day. The signs, chants, and songs at these events expressed frustration over proposed US federal funding cuts for research, and celebrated the fruits of science. Living on Earth's Jenni Doering reports from the Boston March for Science.

As Earth Day celebrates its 47th year on April 22 a billion people gather around the globe to celebrate our green planet. Thousands also meet on the National Mall to defend science as well with teach-ins on climate change and scientific literacy. Host Steve Curwood discusses the elements that galvanized this planetary celebration with Earth Day Network President Kathleen Rogers and why this year’s theme is so vital.

The March for Science recruited students, researchers, professors and other science-enthusiasts from across the country. But some decided to opt out of the event, including Dean Robyn Hannigan of the University of Massachusetts School for the Environment, where Living on Earth is based. Dean Hannigan shared with host Steve Curwood her concerns about the problems and outfalls she sees in a politicized march for science.

They call the award the Green Nobel; each year, the Goldman Environmental Prize celebrates the achievements of grassroots activists from each major continent. Living on Earth Host Steve Curwood speaks with two of the six 2017 winners, mark! Lopez who took on pollution from a lead smelter in East Los Angeles, and 83 year old grandmother Wendy Bowman who fights strip coal mining destruction in her native Australia.

Humanity’s adventure in space is more than half a century old, and soon anyone with enough money may take a trip beyond the atmosphere. They’ll need a guide book and now there is one that supplies both tourists and scientists with a field manual. Called “The Traveler’s Guide to Space: For One-Way Settlers and Round-Trip Tourists,” author Neil Comins, a professor of physics and astronomy at the University of Maine, tells host Steve Curwood that adventurous travellers will experience wonders as well as considerable discomfort and danger.

Kenya’s vast Maasai Mara Reserve is home to large herds of wildebeest and sometimes even among the mass of the herd, individuals can distinguish themselves with a good old-fashioned brawl. Living on Earth’s Resident Explorer Mark Seth Lender shares his blow-by-blow account of a fierce battle between two males.