After the Red Planet reemerged from conjunction — a period when NASA doesn't communicate with spacecraft because Mars is ...

A series of quantum physics experiments and theoretical papers now suggest that heat can flow spontaneously from a cold object to a hot one, provided the right quantum conditions are in place. This ...

A sealed Soviet chamber, sleepless prisoners, rising screams and sudden silence fuelled a chilling internet legend that still ...

An experiment in Alameda involving spraying sea salt particles into the air to determine the feasibility of mitigating global warming, and subsequently halted over safety concerns, will not be resumed ...

While participants made these choices, the research team applied transcranial alternating current stimulation to the frontal and parietal lobes of the brain. This non-invasive stimulation was designed ...

Russell has a PhD in the history of medicine, violence, and colonialism. His research has explored topics including ethics, science governance, and medical involvement in violent contexts. Russell has ...

IN A darkened auditorium in September 2008, I sat in the audience awaiting the start of a presentation entitled “The psychology of evil” by social psychologist Philip Zimbardo. Suddenly, the doors at ...

This article is an extended version of the article “The double-slit experiment” that appeared in the September 2002 issue of Physics World (p15). It has been further extended to include three letters ...