Regular physical exercise not only enhances fitness but also has a positive impact on brain metabolism.

Credit: © Giorgio Pulcini / Fotolia

Numerous studies have shown that physical exercise seems beneficial in the prevention of cognitive impairment and dementia in old age. Gerontologists and sports physicians at Goethe University Frankfurt have examined the effects of regular exercise on brain metabolism and memory of 60 participants aged between 65 and 85 in a randomised controlled trial. Their conclusion: regular physical exercise not only enhances fitness but also has a positive impact on brain metabolism.

As the researchers report in the current issue of the medical journal Translational Psychiatry, they thoroughly examined all the participants in the SMART study (Sport an...

Highly elastic polyrotaxane-polyacrylic acid polymers hold together silicon microparticles as they expand and contract while charging and discharging. Credit: Adapted from Jang Wook Choi and colleagues

Scientists have reported a molecular pulley binder for high-capacity silicon anodes of lithium ion batteries. Silicon anodes are receiving a great deal of attention from the battery community. They have 3~5-times higher capacities compared with those using current graphite anodes in lithium ion batteries. A higher capacity means longer battery use per charge, which is particularly critical in extending the driving mileage of all-electric vehicles...

1.The board game Save the Planet is an open source, cooperative game that is adaptable and customizable, making it an educational tool that grows with kids and enables creative freedom with everything from its “Good Deeds” cards to personalized game play figurines. The total cost with both 2-D and 3-D printing came to $2.89. 2. Legos

Cheap, plastic toys – no manufacturer necessary. The 2020 toy and game market is projected to be $135 billion, and 3D printing brings those profits home. People have scoffed that 3D printers are simply toys themselves. But they probably didn’t realize how much money is made off playthings...

DSCOVR’s Earth Polychromatic Imaging Camera (EPIC) will capture images similar to this one from the Lagrange 1 point, about a million miles away from Earth. Credit: NASA/Katy Mersmann

It was midafternoon, but it was dark in an area in Boulder, Colorado on Aug. 3, 1998. A thick cloud appeared overhead and dimmed the land below for more than 30 minutes. Well-calibrated radiometers showed that there were very low levels of light reaching the ground, sufficiently low that researchers decided to simulate this interesting event with computer models. Now in 2017, inspired by the event in Boulder, NASA scientists will explore the moon’s eclipse of the sun to learn more about Earth’s energy system.

On Aug...