Allen's Hummingbird has been placed on several conservation watchlists, as breeding bird surveys indicating population declines have spurred concerns that climate change may push it out of Southern California. However, local ...
Plants & Animals
Feb 8, 2017
0
7
Rapid population decline among vertebrate species began at the end of the 19th century when industrialization was at its peak, according to researchers at The University of Texas Health Science Center at Houston (UTHealth) ...
Evolution
Dec 16, 2016
1
19
New research from the University of Otago helps explain the recent history of one of New Zealand's most iconic parrot species and the role humans played in their decline.
Ecology
Oct 3, 2016
0
6
A new book by geography and planning experts examines several decades worth of data to provide an analysis of the state of shrinking cities across the United States.
Social Sciences
Sep 14, 2016
0
9
The world population will reach 9.9 billion in 2050, up 33 percent from an estimated 7.4 billion now, according to projections included in the latest World Population Data Sheet from the Population Reference Bureau (PRB).
Environment
Aug 25, 2016
0
12
Bisphenol A (BPA) is a chemical used in many consumer products including water bottles, metal food storage products and certain resins. Often, aquatic environments such as rivers and streams become reservoirs for BPA, affecting ...
Ecology
Aug 23, 2016
0
391
Statisticians at the University of Washington have developed the first model for projecting population that factors in the vagaries of migration, a slippery issue that has bedeviled demographers for decades.
Social Sciences
May 24, 2016
0
160
New U.S. Geological Survey-led research suggests that even though amphibians are severely declining worldwide, there is no smoking gun - and thus no simple solution - to halting or reversing these declines.
Ecology
May 23, 2016
0
9
In the face of scientific dogma that faults the population decline of monarch butterflies on a lack of milkweed, herbicides and genetically modified crops, a new Cornell University study casts wider blame: sparse autumnal ...
Ecology
Apr 22, 2016
0
612
Bombus occidentalis used to be the most common bumble bee species in the Pacific Northwest, but in the mid 1990s it became one of the rarest. Now, according to an article in the Journal of Insect Science offers, it may be ...
Plants & Animals
Feb 9, 2016
0
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