Shiny Mud Balls | Science and Education | Trends in Japan | Web Japan

Shiny Mud Balls | Science and Education | Trends in Japan | Web Japan
At elementary schools, kindergartens, and preschools all across Japan, kids are losing themselves making hikaru dorodango, or balls of mud that shine. Behind this boom is Professor Fumio Kayo of the Kyoto University of Education. Kayo is a psychologist who researches children's play, and he first came across these glistening dorodango at a nursery school in Kyoto two years ago. He was impressed and devised a method of making dorodango that could be followed even by children. Once Kayo teaches children how to make these mud balls, they become absorbed in forming a sphere, and they put all their energy into polishing the ball until it sparkles. The dorodango soon becomes the child's greatest treasure. Kayo sees in this phenomenon the essence of children's play, and he has written academic papers on the subject. The mud balls could also offer fresh insights into how play aids children's growth.

AFP: Japan eyes solar station in space

TOKYO — It may sound like a sci-fi vision, but Japan's space agency is dead serious: by 2030 it wants to collect solar power in space and zap it down to Earth, using laser beams or microwaves.

The government has just picked a group of companies and a team of researchers tasked with turning the ambitious, multi-billion-dollar dream of unlimited clean energy into reality in coming decades.

With few energy resources of its own and heavily reliant on oil imports, Japan has long been a leader in solar and other renewable energies and this year set ambitious greenhouse gas reduction targets.

But Japan's boldest plan to date is the Space Solar Power System (SSPS), in which arrays of photovoltaic dishes several square kilometres (square miles) in size would hover in geostationary orbit outside the Earth's atmosphere.

"Since solar power is a clean and inexhaustible energy source, we believe that this system will be able to help solve the problems of energy shortage and global warming," researchers at Mitsubishi Heavy Industries, one of the project participants, wrote in a report.

"The sun's rays abound in space."

The solar cells would capture the solar energy, which is at least five times stronger in space than on Earth, and beam it down to the ground through clusters of lasers or microwaves.

These would be collected by gigantic parabolic antennae, likely to be located in restricted areas at sea or on dam reservoirs, said Tadashige Takiya, a spokesman at the Japan Aerospace Exploration Agency (JAXA).

AFP: Japan eyes solar station in space
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