A snow roller is a rare meteorological phenomenon in which large snowballs are formed naturally as chunks of snow are blown along the ground by wind, picking up material along the way, in much the same way that the large snowballs used in snowmen are made. Unlike snowballs made by people, snow rollers are typically cylindrical in shape, and are often hollow since the inner layers, which are the first layers to form, are weak and thin compared to the outer layers and can easily be blown away, leaving what looks like a doughnut or Swiss roll. (Source Wikipedia)
Oregon is home to the towering Cascades, a range of mountains and active volcanoes. The Lost Lake likely formed about 3,000 years ago, when lava flowing from a volcanic vent blocked a river channel and created the lake. The lake bed begins to fill in the late fall, when the amount of rain coming in starts exceeding the ability of the lava tubes to drain off the water. But during the dry months, the lake vanishes and turns into meadow. The reason? Two hollow lava tubes at the bottom of the lake are constantly draining the lake dry, much like a bathtub left unplugged. It’s not entirely clear where the water goes, but it possibly seeps into the porous subsurface underground. There have been numerous attempts to plug the leak, those endeavors, however, would only result in the lake flooding. Continue reading Oregon’s ‘Lost Lake’ disappearing through lava tubes
Living Light is a lamp which harvests its energy through the photosynthetic process of the plant. As the plant photosynthesizes, it releases organic compounds into a soil chamber below. The organic matter is broken down by bacteria fostered through a microbial fuel cell. When this happens, electrons are created and transported away from the soil. The electric current is passed along a wire and fed into a ring fitted with LEDs. These light up when a user touches the plant’s leaves.
Dutch designer Ermi van Oers and her team will start off with a small production in 2018. Plans are already in place with Rotterdam to illuminate a city park.
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Crown shyness (also canopy disengagement) is a phenomenon observed in some tree species, in which the crowns of fully stocked trees do not touch each other, forming a canopy with channel-like gaps. The phenomenon is most prevalent among trees of the same species, but also occurs between trees of different species. There exist many hypotheses as to why crown shyness is an adaptive behavior, and the most prominent theory, is that the gaps prevent the proliferation of invasive insects.
Seth Putterman and colleagues from the University of California, Los Angeles used a motor to unwind a roll of sticky tape and recorded the electromagnetic emissions. Ripping the tape from its roll at 3 centimetres per second generated X-ray bursts of 15 kiloelectronvolts – each lasting one-billionth of a second, and containing over a million photons.
The researchers were able to prove the presence of the X-rays by producing pictures of their finger bones. Even peeling ordinary sticky tape can generate bursts of X-rays intense enough to produce an image of the bones in your fingers.