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Sea Turtles Benefiting From Protected Areas

Study Offers First Look at Green Sea Turtle Habitat Use in the Dry Tortugas

DRY TORTUGAS, Fla. – Nesting green sea turtles are benefiting from marine protected areas by using habitats found within their boundaries, according to a U.S. Geological Survey study that is the first to track the federally protected turtles in Dry Tortugas National Park.

Green turtles are listed as endangered in Florida and threatened throughout the rest of their range, and the habits of green sea turtles after their forays to nest on beaches in the Southeast U.S. have long remained a mystery. Until now, it was not clear whether the turtles made use of existing protected areas, and few details were available as to whether they were suited for supporting the green sea turtle’s survival. (more…)

‘Tis the Season — for Plasma Changes at Saturn

Science

Researchers working with data from NASA’s Cassini spacecraft have discovered one way the bubble of charged particles around Saturn — known as the magnetosphere — changes with the planet’s seasons. The finding provides an important clue for solving a riddle about the planet’s naturally occurring radio signal. The results might also help scientists better understand variations in Earth’s magnetosphere and Van Allen radiation belts, which affect a variety of activities at Earth, ranging from space flight safety to satellite and cell phone communications.

The paper, just published in the Journal of Geophysical Research, is led by Tim Kennelly, an undergraduate physics and astronomy major at the University of Iowa, Iowa City, who is working with Cassini’s radio and plasma wave science team. (more…)

Insect eye-inspired camera captures wide field of view with no distortion, according to study co-led by CU-Boulder

Nature, Science

By mimicking the bulging, bowl-shaped eyes possessed by dragonflies, praying mantises, houseflies and other insects, a team of researchers that includes a University of Colorado Boulder engineer has built an experimental digital camera that can take exceptionally wide-angle photos without distorting the image.

To create the innovative camera, which also allows for a practically infinite depth of field, the scientists used stretchable electronics and a pliable sheet of microlenses made from a material similar to that used for contact lenses. The researchers described the camera in an article published on May 1, 2013 in the journal Nature. (more…)

What Happened to Dinosaurs’ Predecessors After Earth’s Largest Extinction 252 Million Years Ago?

Science

Fossil-hunting expeditions to Tanzania, Zambia and Antarctica provide new insights

Predecessors to dinosaurs missed the race to fill habitats emptied when nine out of 10 species disappeared during Earth’s largest mass extinction 252 million years ago.

Or did they?

That thinking was based on fossil records from sites in South Africa and southwest Russia.

It turns out, however, that scientists may have been looking in the wrong places. (more…)

Sweet Success: Berkeley Lab Researchers Find Way to Catalyze More Sugars from Biomass

Science

Catalysis may initiate almost all modern industrial manufacturing processes, but catalytic activity on solid surfaces is poorly understood. This is especially true for the cellulase enzymes used to release fermentable sugars from cellulosic biomass for the production of advanced biofuels. Now, researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) through support from the Energy Biosciences Institute (EBI) have literally shed new light on cellulase catalysis.

Using an ultrahigh-precision visible light microscopy technique called PALM – for Photo-Activated Localization Microscopy – the researchers have found a way to improve the collective catalytic activity of enzyme cocktails that can boost the yields of sugars for making fuels. Increasing the sugar yields from cellulosic biomass to help bring down biofuel production costs is essential for the widespread commercial adoption of these fuels. (more…)

Monitoring concrete

Science

UD professors study microbes as potential biomarkers for damaged concrete

Concrete is the most widely used construction material in the world. However, many concrete roadways and bridges crack due to internal chemical reactions, temperature fluctuations or external chemical and physical stresses.

One internal chemical reaction is the Alkali-Silica Reaction (ASR) that destroys the concrete from within. (more…)

Where Does Charcoal, or Black Carbon, in Soils Go?

Environment

Scientists find surprising new answers in wetlands such as the Everglades

Scientists have uncovered one of nature’s long-kept secrets–the true fate of charcoal in the world’s soils.

The ability to determine the fate of charcoal is critical to knowledge of the global carbon budget, which in turn can help understand and mitigate climate change.

However, until now, researchers only had scientific guesses about what happens to charcoal once it’s incorporated into soil. They believed it stayed there.

Surprisingly, most of these researchers were wrong. (more…)

IBM Research Makes World’s Smallest Movie Using Atoms

Technology

Future storage systems based on atomic-scale memory would be capable of storing massive amounts of Big Data
GUINNESS WORLD RECORDS® certifies movie as World’s Smallest Stop-Motion Film

SAN JOSE, Calif. – 01 May 2013: Scientists from IBM today unveiled the world’s smallest movie, made with one of the tiniest elements in the universe: atoms. Named “A Boy and His Atom,” the GUINNESS WORLD RECORDS -verified movie used thousands of precisely placed atoms to create nearly 250 frames of stop-motion action. (more…)