To put it simply a PLC (programmable logic controller) is a small computer, but, differently from a PC, it must interface to electric circuits and not to a man. Its microprocessor expects to get signals from electric devices as buttons, alarm contacts...

Faint, fossilized tracks of an ancient aquat­ic crea­ture sug­gests an­imals walked us­ing legs at least 30 mil­lion years ear­li­er than had been thought, some sci­en­tists say.

Astronomers said a small space rock was expected to have collided with Earth early Tuesday, which would have created a spectacular fireball over Sudan but was unlikely to have caused any damage on the ground.

Researchers at Boston University's College of Engineering are developing a system that could allow you to connect to the internet via a lightbulb.

Ruins of the Roman building complex were discovered following several months of excavation work at a plot destined to become a hypermarket. The Office of Cultural Heritage had ordered the excavation to be carried out

People may have lived in Florida over 10,000 years ago--earlier than previously thought--according to evidence uncovered by National Geographic researchers.

What is probably the oldest known Bible is being digitised, reuniting its scattered parts for the first time since its discovery 160 years ago. It is markedly different from its modern equivalent. What's left out?

New remote-sensing satellite technology reveals a giant adobe pyramid structure beneath the desert surface. Scientists believe many enormous buildings are buried in that region. Noted in Doomwatch Legacy by Sunstroke author David Kagan.

You may already know how food manufacture contributes to global warming--it's had its fair share of coverage lately, though the actual numbers have varied. In 2007, climate change experts pegged agriculture as producing 10 to 12 percent of global emissions

If you screw up entering your id & password information enough times, Gmail will lock up your account - and there's no one to call. Same for Microsoft & Yahoo, unless you are a premium paying customer. What to do?