News tagged with cell size

Cheating favors extinction

Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit ...

Apr 30, 2013
4.1 / 5 (16) 70 | with audio podcast

Genome evolution and carbon dioxide dynamics

Using the size of guard cells in fossil plants to predict how much DNA each cell contained (the genome size), researchers have discovered that variations in genome sizes over geological time correlate with ...

Oct 25, 2012
5 / 5 (1) 0 | with audio podcast

A whole new meaning for thinking on your feet

Smithsonian researchers report that the brains of tiny spiders are so large that they fill their body cavities and overflow into their legs. As part of ongoing research to understand how miniaturization affects ...

Dec 12, 2011
4.9 / 5 (9) 3 | with audio podcast

Diatom sex pheromone isolated and characterized

(Phys.org)—Diatoms (unicellular photosynthetic organisms) reproduce through asexual cell division alternating with short periods of sexual reproduction. A German and Belgian team has now determined that ...

Dec 14, 2012
5 / 5 (15) 0 | with audio podcast

The nano world of Shrinky Dinks

The magical world of Shrinky Dinks -- an arts and crafts material used by children since the 1970s -- has taken up residence in a Northwestern University laboratory. A team of nanoscientists is using the flexible plastic ...

Aug 13, 2010
4.8 / 5 (4) 1 | with audio podcast

Cancer: The cost of being smarter than chimps?

Are the cognitively superior brains of humans, in part, responsible for our higher rates of cancer? That's a question that has nagged at John McDonald, chair of Georgia Tech's School of Biology and chief research ...

Jun 10, 2009
3.7 / 5 (7) 6