Building a Mars base with bacteria

How do you make a base on Mars? Simple: you send some bacteria to the red planet and let them mine iron. After a couple of years, you send in human settlers who use the iron to construct a base. That, in a nutshell, is the ...

Are students getting enough air?

Roughly 85 percent of recently installed HVAC systems in K-12 classrooms investigated in California did not provide adequate ventilation, according to a study from the University of California, Davis, and Lawrence Berkeley ...

Ashes to concrete

Coal ash is the less notorious byproduct of coal-fired power plants. It's the residual solid waste that comes from burning coal. While it doesn't have the same deleterious reputation of its airborne counterparts, tens of ...

Science reveals improvements in Roman building techniques

The Romans were some of the most sophisticated builders of the ancient world. Over the centuries, they adopted an increasingly advanced set of materials and technologies to create their famous structures. To distinguish the ...

Toxic PCBs linger in schools; EPA, lawmakers fail to act

At first, teachers at Sky Valley Education Center simply evacuated students and used fans to clear the air when the fluorescent lights caught fire or smoked with noxious fumes. When black oil dripped onto desks and floors, ...

Vibration in one direction only

Electronic components such as transistors transmit electric currents in one direction only. What if we could create materials that could achieve similar effects for mechanical vibrations? For many applications, having materials ...

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