Climate change has fish moving faster than regulations can keep up

The world’s system for allocating fish stocks is being outpaced by the movement of fish species in response to climate change, according to a study undertaken by an international team of marine ecologists, fisheries and social scientists, and lawyers. “Fish fleeing warming waters will cross national boundaries and add new ‘shareholders’ to existing fisheries,” said…

Antarctic ice loss has increased

Mass losses of the Antarctic Ice Sheet have increased global sea level by 7.6 mm since 1992, with 40% of this rise (3.0 mm) coming in the last five years alone. In West Antarctica, mass losses today amount to about 160 billion tons per year. The findings are from a major climate assessment known as…

Underestimating the economic risks of climate change

Climate hawks have long had the strong instinct that it’s the economic models, not the physical-science models, that are missing something — that the current expert consensus about climate economic damages is far too sanguine — but they often lack the vocabulary to do any more than insist. As it happens, that vocabulary exists. At…

 Ancient mass extinction triggered by volcanic activity, declining ocean oxygen

Millions of years ago, scientists discovered, powerful volcanoes pumped Earth’s atmosphere full of carbon dioxide, draining the oceans of oxygen and driving a mass extinction of marine organisms. “We want to understand how volcanism, which can be related to modern anthropogenic carbon dioxide release, manifests itself in ocean chemistry and extinction events,” said study co-author…

Environmental costs of producing meat and seafood

Which food type is more environmentally costly to produce — livestock, farmed seafood, or wild-caught fish? The answer is, it depends. But in general, industrial beef production and farmed catfish are the most taxing on the environment, while small, wild-caught fish and farmed mollusks like oysters, mussels and scallops have the lowest environmental impact, according…

Will Slower Hurricanes Lead to More Flood-Heavy Storms?

Two recent studies show that typhoons and hurricanes are getting slower, and are expected to slow even more as the planet warms. “Nothing good comes out of a slowing storm,” National Oceanic and Atmospheric Administration (NOAA) Center for Weather and Climate scientist James Kossin told National Geographic. “It can increase storm surge. It can increase…

What is preventing action to fight climate change?

Hayward makes many good points, but overlooks two key factors that power public policy campaigns. First, Downs points to the fraction of the population affected as a key factor. The larger, the deeper the hold of the issue in the public’s consciousness. Issues such as feminism and pollution remain salient over generations because they affect…

Climate change and moral calculus

The “Ethics of Climate Change” brings a moral philosopher’s toolkit to a set of monumental problems: What is the nature of the threat posed by climate change, and given the uncertainties, what should be done about it? Should individuals take action, or governments? Is the current generation responsible for acting on behalf of future citizens?…

Climate change economic risks significantly underestimated

The paper in the Review of Environmental Economics and Policy calls for the Intergovernmental Panel on Climate Change (IPCC) to improve how it analyses the results of economic modelling as it prepares its Sixth Assessment Report, due to be published in 2021 and 2022. The paper’s authors, Thomas Stoerk of the Environmental Defense Fund, Gernot…

Climate change and the Arab world

SIX years ago Nabil Musa, a Kurdish environmentalist, returned from over a decade abroad to find Iraq transformed. Rivers in which he had swum year-round turned to dust in summer. Skies once crowded with storks and herons were empty. Drought had pushed farmers to abandon their crops, and dust storms, once rare, choked the air….