Scientists have long assumed that the sugars that nourish trees are pushed by water pressure from the leaves where they are created to the stems and roots where they are needed.
Plants & Animals
Dec 19, 2017
0
70
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms—ions—but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in ...
Nanophysics
Dec 8, 2017
1
32
Two-dimensional materials have been successfully assembled into devices with the smallest possible man made holes for water desalination.
Nanomaterials
Oct 27, 2017
0
302
Lawrence Livermore scientists, in collaboration with researchers at Northeastern University, have developed carbon nanotube pores that can exclude salt from seawater. The team also found that water permeability in carbon ...
Nanomaterials
Aug 24, 2017
0
896
Despite the many disastrous impacts of climate change, there are some regions of the globe that might benefit from hotter temperatures.
Environment
Oct 12, 2016
3
0
Creating transportation fuels from wood chips, grasses, or other types of biomass remains a significant scientific challenge. One troubling step in the process of turning biomass-derived oils into transportation fuels requires ...
Materials Science
Jun 22, 2016
0
5
When superstorm Sandy hit New York in 2012, it caused a massive 14-foot storm surge. Several New York City subway stations were flooded and the subway was shut down for days. Although the authorities prepared well for the ...
Environment
May 11, 2016
0
12
Droughts could kill off the tallest trees in tropical rainforests in coming decades, a study suggests.
Environment
Nov 23, 2015
1
34
A report card is out on the Mississippi River basin, and the grade is not good: a D+, with an aging transportation infrastructure topping the list of concerns.
Environment
Oct 14, 2015
0
13
In the Earth Surface Dynamics Lab at the California Institute of Technology (Caltech) the behavior of rivers is modeled through the use of artificial rivers—flumes—through which water can be pumped at varying rates over ...
Earth Sciences
Jan 29, 2014
0
0
