NASA's Terra satellite revealed that Tropical Cyclone Glenda was being stretched out by wind shear on Feb. 27.
The new study shows that these songbirds achieve precise coordination by adjusting the period between two consecutive phrases (inter-phrase intervals), depending on whether their song is answered, the phrase type used in the duet and the position of the inter-phrase interval within the duet.
Counter-intuitively, in vertebrates photoreceptors are located behind the neurons in the back of the eye. Now physicists explain why the neural wiring seems to be backwards.
That swim tracks made by tetrapods occur in high numbers in deposits from the Early Triassic is well known. What is less clear is why the tracks are so abundant and well preserved. Paleontologists at the University of California, Riverside have now determined that a unique combination of factors in Early Triassic delta systems resulted in the production and unusually widespread preservation of the swim tracks: delayed ecologic recovery, depositional environments, and tetrapod swimming behavior.
Researchers have found one one possible explanation for some birds' ability to sense the earth's magnetic field and use it to orient themselves: a magnetically sensitive protein called cryptochrome that mediates circadian rhythms in plants and animals.
New research has highlighted the value of a modern logging technique for maintaining biodiversity in tropical forests that are used for timber production.
The activity of the Sun is an important factor in the complex interaction that controls our climate. New research now shows that the impact of the Sun is not constant over time, but has greater significance when the Earth is cooler.
A new species of algae has been discovered in reef corals of the Persian Gulf where it helps corals to survive seawater temperatures of up to 36 degrees Celsius -- temperatures that would kill corals elsewhere.
Researchers at Case Western Reserve University have made an inexpensive metal-free catalyst that performs as well as costly metal catalysts at speeding the oxygen reduction reaction in an acidic fuel cell, and is more durable. The catalyst is made of sheets of nitrogen-doped graphene that provides great surface area, carbon nanotubes that enhance conductivity, and carbon black particles that separate the layers allowing the electrolyte and oxygen to flow freely, which greatly increased performance and efficiency.
From Saharan dust storms to icy clouds to smoke on the opposite side of the continent, the first image from NASA's newest cloud- and aerosol-measuring instrument provides a profile of the atmosphere above Africa.