The second best way to use plastic is to recycle it. Dave Hakkens presents on his webside how it works:
The technique of phytomining involves growing a crop of a metal-hyperaccumulating plant species, harvesting the
biomass and burning it to produce a bio-ore. In the first phytomining experiment, it was found that a yield of 100 kg/ha of sulphur-free Ni could be produced.
Sea cucumbers are found on the floor of all the world’s oceans. Their tubular shape resembles a cucumber taken from the garden. The animals frequent shallow coastal waters and are also found in the deepest ocean. Sea cucumbers, also called sea slugs, are colorful occupants of many salt water aquariums. The sea cucumber has the special ability to change its leathery skin from firm to flabby in just seconds. They tense up their body tissue by linking collagen fibers into a stiff net. When the fibers disconnect, the skin again becomes soft and pliable. Such behavior catches the interest of medical workers, especially brain specialists. Patients with Parkinson’s disease or paralysis can be treated by inserting tiny electrodes in the brain.
solve the contradiction “be soft and be stiff”
The electric eel’s ability comes from 5000-6000 internal layers of cells or electroplaques, stacked in a series circuit like the cells of a car battery.
Many American alligators live in stagnant, polluted waters. Their diet includes diseased, infected, and injured animals. In addition, fierce battles with prey often lead to wounds. Nevertheless, the alligators tend to remain healthy.
Many of us remember the misfortune of stepping on a thumbtack, sitting on a tack (!), or reaching into a box of thumbtacks and getting pricked. New York design engineer Toshi Fukaya has now found a simple solution to the painful problem.
spike, tires, grip applications, climbing, grippers
Chameleons display many design features including changing skin color and stereoscopic eyesight. Another feature is their ability to capture insects with an extended tongue. Upon sighting fresh prey, the chameleon quickly extends its tongue to twice its body length. The tongue moves outward at ten meters per second (33 ft/sec). Once released, the tongue is in free flight and unguided, so it must be launched with precision. In addition, the tongue must exert very little force to make a sticky capture without pushing the target insect away.
Lizards are some of the most versatile animals on the planet. Geckoes for example can climb straight up walls, even across glass ceilings upside down. Their feet have been studied to learn how to make better adhesives. Now, lizards are the subject of a new investigation which includes the dinosaurs. Researchers are looking at how lizards use their tails for balance, resulting in similar mechanical “tails” for robots.
The thorny devil lizard, or thorny dragon, lives in the desert areas of central Australia. This lizard, just 4-6 inches long, looks ferocious with a body completely covered with thorny spines. Two additional large pointed scales on its head resemble curved horns.
How does this animal survive in a dry land where the temperature reaches 122⁰F (50⁰ C)?