The history of wildfires over the past 2,000 years in a northern Colorado mountain range indicates that large fires will continue to increase as a result of a warming climate, according to a new study led by a University of Wyoming doctoral student.

“What our research shows is that even modest regional warming trends, like we are currently experiencing, can cause exceptionally large areas in the Rockies to be burned by wildfires,” says John Calder, a Ph.D. candidate in UW’s Program in Ecology and the Department of Geology and Geophysics.

Read more ...

Scientists have projected that the onset of spring plant growth will shift by a median of three weeks earlier over the next century, as a result of rising global temperatures.

The results, published today (Wednesday 14th October), in the journal Environmental Research Letters, have long term implications for the growing season of plants and the relationship between plants and the animals that depend upon them.

Read more ...

Un nuevo estudio del equipo Laboratorio de Ciencia de Marte y Curiosidades de la NASA, ha confirmado que Marte, hace miles de millones de años, fue capaz de almacenar agua en los lagos durante un período prolongado de tiempo.

Utilizando datos del Rover Curiosity (un astromóvil de la NASA, N del T), el equipo ha determinado que hace mucho tiempo, el agua propició el depósito de sedimentos en el cráter Gale, donde el Rover aterrizó hace más de tres años. El sedimento fue depositado como capas que formaron la base del Monte Sharp, la montaña encontrada en el centro del cráter.

Read more ...

New research by biologists at the University of York shows that plant and insect diversity is more loosely linked than scientists previously believed. Insects and flowering plants are two of the most diverse groups of organism on the planet. For a long time the richness of these two lineages has been regarded as linked, with plant-feeding insect groups considered unusually species rich compared with their nearest relatives. In a new analysis, based on the most complete tree of insect relationships to date, researchers at the University have shown that there is not a simple relationship between insect diet and diversity.

Read more ...

Un nuevo estudio de la Universidad de Washington que puso a prueba 65 vinos de los cuatro principales estados productores de vino de Estados Unidos, California, Washington, Nueva York y Oregon, ha encontrado que todos los vinos, excepto uno de ellos, tienen niveles de arsénico que superan lo permitido en el agua potable.

La Agencia de Protección Ambiental de Estados Unidos permite que el agua potable contenga no más de 10 partes por mil millones de arsénico. Las muestras de vino variaron de 10 a 76 partes por mil millones, con un promedio de 24 partes por mil millones.

Read more ...

A new study has found that powerful winds are removing massive amounts of snow from parts of Antarctica, potentially boosting estimates of how much the continent might contribute to sea level. Up to now, scientists had thought that most snow scoured from parts of the continent was simply redeposited elsewhere on the surface. However, the new study shows that in certain parts, called scour zones, some 90 percent—an estimated 80 billion tons per year—is instead being vaporized, and removed altogether. 

Read more ...

More Articles ...

Subcategories