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For many people, electricity is a vital part of everyday life
and is often taken for granted. But not everyone has{{U}} (36)
{{/U}}to it. Improving the supply and availability of electricity across the world
has{{U}} (37) {{/U}}scientists for decades. Now, however,
technological advances mean that a cheap, safe{{U}} (38) {{/U}}of
electricity may soon be available virtually anywhere on the planet.
The idea is to harness the sun’s energy by using satellites. Of course,
solar-powered satellites are not a new idea. But it is only{{U}} (39)
{{/U}}recently that technology has advanced far enough to make the idea
a{{U}} (40) {{/U}}possibility.
The basic idea is that
the solar-powered satellites will{{U}} (41) {{/U}}the energy in
sunlight into electricity. The energy will be{{U}} (42) {{/U}}to earth
in the form of microwaves, which will be collected by a{{U}} (43)
{{/U}}known as a microwave collector. A re-
