Sally Ann Ranney
“It always seems
until it is done.”
– Nelson Mandela
Need to Know
Climate Change is leading to Arctic light pollution and threatening marine life.
THE ARCTIC CIRCLE in the middle of winter is so dark it’s hard to see. Because of the way the top of the Earth tilts away from the sun, the star never appears to rise above the horizon, and dark skies drench the Arctic in what’s known as polar night.
“It kind of feels like you’re working the night shift all the time,” says Finlo Cottier, an oceanographer at the Scottish Association for Marine Science.
Two years ago, Cottier and a team of scientist traveled to the Arctic in the middle of winter to study how light affects the marine critters living in far northern waters. Like us, marine organisms rely on light to guide their daily functions. Light indicates behavior like when to migrate through the water column to find food, when to mate, and where to hunt.
“In June and July, there is this explosion of growth and activity,” says Cottier. “How do we get to that point? What happens in the polar night that sets things up for this spring bloom? We’re trying to understand the complete cycle.” More…
National Geographic | Sarah Gibbens | March 5, 2020
Inside the Liberal state stepping into a low-emissions future
Tasmanian premier Peter Gutwein’s conservative government is embracing green hydrogen as it positions itself as a ‘renewables powerhouse’.
This week a Liberal government set an ambitious 200% renewable energy target for 2040, a goal that foresees the creation of an extensive clean export industry.
It vowed support to kickstart production of “green” hydrogen – a potentially revolutionary fuel touted as a zero emissions fossil fuel replacement – with a plant promised for local use no later than 2024, and an export industry by 2030. And it said it would install fast-charging equipment for electric vehicles at 12 sites this year.
The government also announced a review of what would need to be done to reach net zero emissions before 2050.
The Liberal administration in question was not the Morrison government in Canberra, where the climate policy debate remains focused on the cost of acting above all else, but the Tasmanian state government in Hobart. More…
The Guardian | Adam Morton | March 6, 2020
Why is an ocean current critical to world weather losing steam?
Summer sea ice has been shrinking so dramatically here in the Fram Strait, high in the Arctic between Norway and Greenland, that researchers who make this trip annually point out missing patches like memories of departed friends.
“The first time I was here, in 2008, you could walk on the ice,” says Norwegian Polar Institute (NPI) oceanographer Paul Dodd, gesturing from the deck of this research icebreaker toward the spot, near the Prime Meridian, where his team is about to take samples for temperature, salinity, dissolved carbon, and other chemical measurements of what is now open water. It’s dotted with only a few random, battered-looking ice drifts.
Temperatures are rising and ice is melting all over Earth. But this place is special: The ocean changes that are happening right here could dramatically alter the climate for much of the rest of the planet.
National Geographic | Cheryl Katz |December 2, 2019
Ryan Morris, NGM Staff | Sources: NASA
National Snow & Ice Data Center
Learn More About Sally Ranney
Climate Change Solution Strategist
Wildlife & Biodiversity Activist