Sunny days
Cool vibrations
Scientists have developed a refrigerator that uses sound energy
Restoring power
Sun shining down
Yes. The Sun can save us from a water crisis
Umbrella for the Earth
Pressure tactics
Nanogenerators now use pressure to produce electricity
Hard disk drives make archiving easier
No-fear syringe
Choosing options
Power patterns
Hot stuff
Bacterial chips
Cutting edge
A cheap technology can help meet the demand for synthetic diamonds
Pen pal
Diamond film from fullerenes
Fridges without the pong
One-master guns
Diamond delight
Hide and seek
New technologies to detect concealed arms and drugs
Infrared vigil
Hawk's-eye detector