Underwater cables bring faster internet to West Africa

Stretching some 7,000 kilometres along the West African coastline, a submarine fibre-optic cable emerges off the coast of Nigeria to help bridge the digital divide in the continent.Dubbed Main One Cable, the system links West Africa with Europe, bringing ultra-fast broadband in the region. It runs from Seixal in Portugal through Accra in Ghana to Lagos in Nigeria and branches out in Morocco, Canary Islands, Senegal, and Ivory Coast. -CNN

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Green Pavement makes Electricity

Paving slabs that convert energy from people's footsteps into electricity are set to help power Europe's largest urban mall, at the 2012 London Olympics site.

The recycled rubber "PaveGen" paving slabs harvest kinetic energy from the impact of people stepping on them and instantly deliver tiny bursts of electricity to nearby appliances. The slabs can also store energy for up to three days in an on-board battery, according to its creator.

The Potential

"Up to 52,000 people per hour pass through busy train stations. The average person takes around 200 million steps in their lifetime."