The movement of gas inside a star causes seismic waves which in turn cause irregularities on the star's surface. These 'earthquakes' (or pulsations) produce periodic variations in the brightness of a star, and the study of ...
Astronomy
Dec 2, 2015
0
10
The long history of severe droughts across Europe and the Mediterranean has largely been told through historical documents and ancient journals, each chronicling the impact in a geographically restricted area. Now, for the ...
Earth Sciences
Nov 6, 2015
0
1063
Astronomers using the VISTA telescope at ESO's Paranal Observatory have discovered a previously unknown component of the Milky Way. By mapping out the locations of a class of stars that vary in brightness called Cepheids, ...
Astronomy
Oct 28, 2015
23
146
Climate variability is one of the major forces in the rise and fall of agrarian states in Mexico and Peru, according to a team of researchers looking at both climate and archaeological records.
Earth Sciences
Oct 15, 2015
0
23
Making predictions about climate variability often means looking to the past to find trends. Now paleoclimate researchers from the University of Missouri have found clues in exposed bedrock alongside an Alabama highway that ...
Earth Sciences
Oct 8, 2015
0
12
We can quickly tell from the way someone walks whether that person is young or old, male or female, healthy or sick, because patterns of movement vary from one person to the next. In fact, we can often recognize a friend ...
Plants & Animals
Oct 1, 2015
64
364
Fluctuations in extreme weather events, such as heavy rains and droughts, are affecting ecosystems in unexpected ways—creating "winners and losers" among plant species that humans depend upon for food.
Environment
Sep 28, 2015
4
27
Every language has its own collection of phonemes, or the basic phonetic units from which spoken words are composed. Depending on how you count, English has somewhere between 35 and 45. Knowing a language's phonemes can make ...
Computer Sciences
Sep 14, 2015
0
1738
Longer, less frequent climate fluctuations may be contributing to abrupt and unexplained ecosystem shifts in the North Pacific, according to a study by the University of Exeter.
Earth Sciences
Aug 31, 2015
0
72
A study led by Indiana State Climatologist Dev Niyogi of Purdue University has determined that existing crop models can reliably forecast corn yields during times of climate variability, specifically the El Niño and La Niña ...
Earth Sciences
Aug 27, 2015
0
10
