‘We are not in a position to control a cloud brightening experiment scientifically,’ says one critic of the idea

Geoengineering is a dirty word in most scientific circles. The consensus is that deliberate intervention in the Earth’s climatic system, for whatev(...)

A Facebook page affiliated with Islamic State shows the group’s militants in Damascus, Syria. Photograph: Rased News Network, via AP

In June a leaked internal memo from the US State Department admitted Islamic State was winning the war online. The New York Times reported the IS’s “v(...)

Artist’s rendering of unit to remove CO2 from air. Any such machine must be able to run passively, “like a tree standing in the wind”, says Prof Klaus S Lackner, who has designed a prototype.

Artificial plants are one of this reporter’s biggest pet hates. Sitting in the waiting room of a dentist’s surgery, a fake fern strategically positio(...)

Hillary Clinton at Texas Southern University, Houston, where she delivered her most aggressive speech since she announced she was running for president.  Photograph: Pat Sullivan/AP Photo

Republican senator Ted Cruz was firing up conservatives gathered to support his colleague Pat Roberts, who was struggling to hold on to his US Senate (...)

The  fossil jawbone, whose discovery    pushes back human history by 400,000 years, according to scientists. The jawbone was found in Ethiopia.  Photograph: Arizona State University/Kaye Reed handout/Reuters

Human history has been pushed back 400,000 years with the discovery of a fossil jawbone dating back almost three million years.The lower jaw, uncovere(...)

Richard Dawkins, who appeared at the Burke theatre, Trinity College on Tuesday at an event organized by the Origins Project Dialog in which they discuss Randomness and Uncertainty. Photograph: Fergal Phillips 2:48

Children need to be “protected” from religious indoctrination in schools, biologist and atheist campaigner Richard Dawkins has said, backing a campaig(...)

Beachgoers relax  on a  in Eastbourne in England during a heatwave. A new report warns that global warming could increase vulnerability to life-threatening heatwaves more than 10-fold in parts of Europe by the end of the century. Photograph: Phil Cole/Getty Images.

Global warming could increase vulnerability to life-threatening heatwaves more than 10-fold in parts of Europe by the end of the century, a new repor(...)

Only about 16 per cent of students in Ireland are part-time, according to Professor Mark Brown, director of the National Institute for Digital Learning. Photograph: AbsolutVision

DCU has unveiled a new plan for digital learning as the university seeks to expand its off-campus student population.However, it says, growth in the a(...)

Andrew Kingston, Peter Duffy, Brendan Finucane and Daniel Rosehill just off the Start-up Express from Cork for the Dublin Web Summit. Photograph: Aidan Crawley

Tough love from managing director of start-up accelerator Techstars Nicole Glaros did nothing to dampen the spirits and mood of entrepreneurs aboard t(...)

University partnership: ASU president Dr Michael Crow (left) and DCU president Prof Brian MacCraith

After years of informal collaboration, last week Dublin City University announced a more concrete partnership with Arizona State University. Why? The (...)