Carnegie Institution for Science

Plant organ development breakthrough

Plants grow upward from a tip of undifferentiated tissue called the shoot apical meristem. As the tip extends, stem cells at the center of the meristem divide and increase in numbers. But the cells on the periphery differentiate ...

Dec 03, 2012
not rated yet 0 | with audio podcast

Magnesium oxide: From Earth to super-Earth

The mantles of Earth and other rocky planets are rich in magnesium and oxygen. Due to its simplicity, the mineral magnesium oxide is a good model for studying the nature of planetary interiors. New work from ...

Nov 22, 2012
4.2 / 5 (6) 0 | with audio podcast

Crystals for efficient refrigeration

(Phys.org)—Researchers at the Carnegie Institution have discovered a new efficient way to pump heat using crystals. The crystals can pump or extract heat, even on the nanoscale, so they could be used on ...

Nov 05, 2012
3.6 / 5 (10) 0 | with audio podcast

Solving stem cell mysteries

The ability of embryonic stem cells to differentiate into different types of cells with different functions is regulated and maintained by a complex series of chemical interactions, which are not well understood. Learning ...

Oct 26, 2012
5 / 5 (3) 0 | with audio podcast

Forest mortality and climate change: The big picture

Over the past two decades, extensive forest death triggered by hot and dry climatic conditions has been documented on every continent except Antarctica. Forest mortality due to drought and heat stress is expected to increase ...

Sep 09, 2012
4.1 / 5 (10) 0 | with audio podcast

Elusive metal discovered

Carnegie scientists are the first to discover the conditions under which nickel oxide can turn into an electricity-conducting metal. Nickel oxide is one of the first compounds to be studied for its electronic ...

Aug 22, 2012
4.7 / 5 (7) 2 | with audio podcast

Airborne technology helps manage elephants

For years, scientists have debated how big a role elephants play in toppling trees in South African savannas. Tree loss is a natural process, but it is increasing in some regions, with cascading effects on the habitat for ...

Aug 06, 2012
not rated yet 0

Supernova progenitor found?

(Phys.org) -- Type Ia supernovae are violent stellar explosions. Observations of their brightness are used to determine distances in the universe and have shown scientists that the universe is expanding at ...

Aug 03, 2012
4.9 / 5 (9) 4 | with audio podcast

Two Solar System puzzles solved

Comets and asteroids preserve the building blocks of our Solar System and should help explain its origin. But there are unsolved puzzles. For example, how did icy comets obtain particles that formed at high ...

Jul 25, 2012
4.7 / 5 (7) 14 | with audio podcast