Science

The Sustainable City

As the urbanisation of the planet intensifies and natural resources diminish, the way we build is increasingly being questioned. City planners, architects, and engineers are all looking for innovative solutions for the way we design cities, create a public space or private house as well as for the building materials themselves. Focusing on landmark buildings, […]

Self-directed microspider could repair blood vessels

Self-directed microspider could repair blood vessels

A new spider-like micromachine could swim through a person’s blood vessels, healing damaged areas and delivering drugs as it goes. Ayusman Sen of Pennsylvania State University in University Park and his colleagues have created the self-propelling microspiders using spheres less than a micrometre wide. Each sphere is made up of two halves – one hemisphere […]

Out of space in outer space: Special report on NASA’s ‘space junk’ plans

Out of space in outer space: Special report on NASA’s ‘space junk’ plans

A 182-page report issued September 1 by the United States National Research Council warns that the amount of debris in space is reaching “a tipping point”, and could cause damage to satellites or spacecraft. The report calls for regulations to reduce the amount of debris, and suggests that scientists increase research into methods to remove […]

NASA gives public new internet tool to explore the solar system

NASA gives public new internet tool to explore the solar system

The “Eyes on the Solar System” interface combines video game technology and NASA data to create an environment for users to ride along with agency spacecraft and explore the cosmos. Screen graphics and information such as planet locations and spacecraft maneuvers use actual space mission data. “This is the first time the public has been able […]