Fuel cell drone makes an epic ocean crossing
Although multicopter drones now are being used to transport medical samples and supplies, their 30-minute (or so) battery life limits their range. This week, however, a hydrogen-powered delivery drone managed a one-hour, 43-minute ocean crossing.
Interview: The next steps for Lilium's eVTOL air taxi service
The dream of three-dimensional commuting is slowly coming closer, with a number of companies well into the test phase with various electric VTOL air taxi designs that will soon begin offering point-to-point flights far, far more cheaply than helicopt
How To Heat Your Home With Solar Heating
Solar power is a hot topic these days. With energy costs increasing and expected to keep on increasing, many are seeing solar power as the way to go. While expensive, it's possible to add solar power to pretty much any home.
BEEP base keeps an eye – and an ear – on bee hives
Beekeepers frequently open up their hives to check on them, but doing so adds to their workload, and it stresses out the bees. A team of Dutch entrepreneurs set out to develop an alternative, resulting in the BEEP base hive-monitoring system.
"Unsinkable metal" stays afloat even with holes punched in it
Superhydrophobic materials, which are excellent at repelling water, can be extremely useful for a whole range of reasons, both obvious and not-so-obvious. They can prevent ice from building up on surfaces, make electronics waterproof, make ships more
Why Does Inflammation Seem to Underlie All Sickness?
Writing in 1889, the Swiss pathologist Ernst Ziegler observed that "a brief and precise definition of inflammation is altogether impossible." Even back then, experts like Ziegler recognized that inflammation manifests in different ways, and that
Blood vessels incorporated into 3D-printed living skin
It certainly would be great if instead of having to be harvested from a patient's own body, permanent skin grafts could be 3D-printed as needed. Well, we may be getting a little closer to that point, as scientists have now bioprinted living skin comp
Ancient Maya Farms Revealed by Laser Scanning
That all changed when scientists began using lidar, a remote sensing technique that shoots lasers from low-flying planes. By measuring a laser's travel time, scientists can determine the shape of the ground within a few centimeters and create a pic
Fiber optics
Fiber-optic cables send light signals down a glass or plastic fiber thinner than a strand of hair. Reflective cladding surrounding that core boosts the signal in a technique called "total internal reflection." The speed of the light passing down
Is 'Real' AI Possible?
When the modern computer was first created in the 1960s, people soon started imagining a future with intelligent machines.
Steroid Injections: Bad Medicine
In medical school, I was trained to inject steroids into arthritic joints. The steroids did provide some relief from arthritic pain. I was taught that three injections per joint were safe and would cause no harm.
Entrepreneurial Space Revolution
How big a deal was the success of the SpaceX Falcon Heavy? In 2010, NASA and the Augustine commission determined that it would cost $36 billion and 12 years to develop a heavy-lift vehicle.
Lift off!
Richard Branson's Virgin Galactic becomes the first space tourism company to hit public markets and sees its shares soar more than 9% in NYSE debut
India Plans Fleet of 17 Additional Nuclear Reactors
India is aiming to build a fleet of future nuclear power plant projects in order to reduce costs and construction times, according to Kamlesh Vyas, chairman of the country's Department of Atomic Energy (DAE).