UV Surface Environment of Earth-like Planets Orbiting FGKM Stars Through Geological Evolution

uv-surface

The UV environment of a host star affects the photochemistry in the atmosphere, and ultimately the surface UV environment for terrestrial planets and therefore the conditions for the origin and evolution of life. We model the surface UV radiation environment for Earth-sized planets orbiting FGKM stars at the 1AU equivalent distance for Earth through its … [Read more…]

Global warming and clean energy in Asia

global-warming

The year 1896 was “a very good year” for many reasons. It was in that year that Puccini’s Opera, La Bohème, premiered, gold was discovered in the Yukon, and the Dow Jones Industrial Average finished its first year at around 41. But perhaps closer to our subject, two other events stand out. Firstly, Henry Ford … [Read more…]

Global Warming Causing ‘Irreversible Damage': UN Report

Global-Warming

Global warming is here, and “severe, widespread and irreversible” damage may be inevitable unless faster action is taken to reduce fossil fuel emissions, a newly leaked UN report has warned. The 127-page report states that further pollution – caused by the burning of fossil fuels, such as coal, oil and gas – will contribute to … [Read more…]

Ecomodernism and the Anthropocene

Ecomodernism

Sometime next year, the International Commission on Stratigraphy (ICS) may or may not decide that humans have changed the Earth so significantly that we have entered a new geologic epoch, the Anthropocene, or age of humans.1 The idea that humans have created a qualitatively different planet from the one we inherited was discussed at the … [Read more…]

Below Our Feet, a World of Hidden Life

Below-Our-Feet

The soil teems with billions of hidden microbes. Researchers have begun to catalog how these organisms are changing the world. Janet Jansson first started to wonder about the vast universe of underground life as a student at New Mexico State University in the late 1970s. A handful of soil contains about 10 billion bacteria, but … [Read more…]

Why we fight for the living world

living-world

Who wants to see the living world destroyed? Who wants an end to birdsong, bees and coral reefs, the falcon’s stoop, the salmon’s leap? Who wants to see the soil stripped from the land, the sea rimed with rubbish? No one. And yet it happens. Seven billion of us allow fossil fuel companies to push … [Read more…]

Major Antarctic Ice Shelf May Disappear by 2020

antarctic

With climate change heating things up, and the Earth’s poles rapidly melting, it should come as no surprise that a major Antarctic ice shelf may completely disappear by 2020, according to a new NASA study. The last remaining section of the Larsen B Ice Shelf, which partially collapsed in 2002, is quickly weakening, flowing faster, … [Read more…]