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Un nuevo análisis global de peces y mariscos encontró que las poblaciones de peces a lo largo de los océanos del mundo están contaminadas con sustancias industriales y agrícolas, colectivamente conocidos como contaminantes orgánicos persistentes (COP). El estudio de los investigadores de la Institución Scripps de Oceanografía en la Universidad de California en San Diego ¿reveló también algunas buenas noticias?... Sí, las concentraciones de estos contaminantes han estado disminuyendo constantemente en los últimos 30 años.

Los resultados, publicados en la revista PeerJ, del 28 de enero 2016, se basaron en un análisis...

Less than two months after 196 parties to the United Nations Framework Convention on Climate Change (UNFCCC) adopted the Paris Agreement, the global community is already seeing signs of it being a decisive turning point, according to a senior UN official dealing with climate issues. 

A month and a half since 196 parties to the United Nations Framework Convention on Climate Change (UNFCCC) adopted the Paris Agreement, the global community is already seeing signs of it being a decisive turning point, according to a senior UN official dealing with climate issues. 

“Much has been happening since Paris – the World Meteorological Organization (WMO) confirmed that 2015 was the hottest year on record, not just by a little but by a lot,” Janos Pasztor, who was today appointed as Senior Adviser to the Secretary-General on Climate Change, told reporters at a briefing in New York. 

When the moon is high in the sky, it creates bulges in the planet’s atmosphere that creates imperceptible changes in the amount of rain that falls below. New University of Washington research to be published in Geophysical Research Letters shows that the lunar forces affect the amount of rain – though very slightly.

The moon was formed by a violent, head-on collision between the early Earth and a “planetary embryo” called Theia approximately 100 million years after the Earth formed, UCLA geochemists and colleagues report.

Scientists had already known about this high-speed crash, which occurred almost 4.5 billion years ago, but many thought the Earth collided with Theia (pronounced THAY-eh) at an angle of 45 degrees or more — a powerful side-swipe (simulated in this 2012 YouTube video). New evidence reported Jan. 29 in the journal Science substantially strengthens the case for a head-on assault.

The researchers analyzed seven rocks brought to the Earth from the moon by the Apollo 12, 15 and 17 missions, as well as six volcanic rocks from the Earth’s mantle — five from Hawaii and one from Arizona.

As presidential contenders gather in Iowa for the beginning of the party selection season, they may have noticed a lot of wind turbines, writes Zachary Davies Boren. And if they have any sense, they will find only nice things to say about them. Wind supplies 30% of the state's power, more than any other US state, and Iowans are all for it. Ted Cruz, mind your words!

Today, there are 12 factories in Iowa that build wind-related parts and materials, and wind supports as many as 7,000 jobs. Furthermore, the steady long-term costs of wind power promise to keep Iowa's electricity prices stable for many years to come.

All eyes are on Iowa, the midwestern state set to kick-off the US presidential election next week with its folksy first-in-the-nation caucus.