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Las temperaturas inusualmente altas y el cálido océano han llevado a una extensión récord del hielo marino en el Ártico en noviembre, según científicos del Centro Nacional de Datos de Nieve y Hielo (NSIDC) de la Universidad de Colorado Boulder. En el Hemisferio Sur, la extensión del hielo marino antártico también alcanzó un mínimo récord para el mes, causado por temperaturas moderadamente cálidas y un cambio rápido en los vientos circumpolares.

The International Joint Commission has developed a strategy for how U.S. and Canadian governments can address this toxic problem.

Marine ecologists have shown how noise pollution is changing the behaviour of marine animals - and how its elimination will significantly help build their resilience. Laura Briggs reports.

Building up a library of sound from marine creatures including cod, whelks and sea slugs is important to helping build resilience in species affected by noise pollution, according to Exeter University's Associate Professor in Marine Biology and Global Change Dr Steve Simpson.

Human noise factors including busy shipping lanes, wind farms and water tourism can all impact on the calls of various species - including cod which relies on sound for finding a mate with their "song".

A multi-year study led by an Iowa State University scientist suggests the turbines commonly used in the state to capture wind energy may have a positive effect on crops.

Gene Takle, a Distinguished Professor of agronomy and geological and atmospheric sciences, said tall wind turbines disbursed throughout a field create air turbulence that may help plants by affecting variables such as temperature and carbon dioxide concentrations.

Global concentrations of methane, a powerful greenhouse gas and cause of climate change, are now growing faster in the atmosphere than at any other time in the past two decades.

That is the message of a team of international scientists in an editorial published 12 December in the journal Environmental Research Letters. The group reports that methane concentrations in the air began to surge around 2007 and grew precipitously in 2014 and 2015.