Bird nest riddle: Which shape came first? Don’t assume simple cup-shaped architecture evolved before roofed structures By Susan Milius ,
cheap jordans for sale
, 17:55 PM August 19, 2016 WASHINGTON — To human thinking, songbird nests now seem to have evolved backwards: The most distant ancestor probably built complex,
http://cheapjordansstock.com
, roofed structures. Simple open-top cup nests came later. More than 70 percent of songbird species today build some form of that iconic open cup, evolutionary biologist Jordan Price said August 18 at the North American Ornithological Conference. Yet looking at patterns of nest style across recent bird family trees convinced him that the widespread cup style probab... Source URL:

The hunt is on for chemicals to keep both you and the planet cool.
A new agreement will soon begin phasing out the powerful greenhouse gases currently used in air conditioners, refrigerators and insulating foams. These gases,
cheap air jordans
, called hydrofluorocarbons,
cheap jordans
, or HFCs, can cause hundreds of times more global warming per molecule than carbon dioxide. The phaseout,
cheap retro jordans
, announced by world leaders on October 15 in Kigali,
cheap jordans online
, Rwanda,
cheap Authentic jordans
, has scientists and chemical companies investigating new molecules to chill things with less harm to the planet. Some of these molecules are already in use,
cheap jordans free shipping
, while others require more tinkering.
Hunting for eco-friendly alternatives to planet-warming HFCs

http://asmap-inform.co...opic.php?f=2&t=371450

http://www.garteninsel...ion=com_content&id=56

http://www13.plala.or....ite_roots/gwbbs/gwbbs.cgi