A quick and easy way of adding using handshakes.

At 9:59 pm (UK time) on Friday, May 31, 2013, asteroid 1998 QE2 will sail serenely past Earth, getting no closer than about 3.6 million miles (5.8 million kilometers), or about 15 times the distance between Earth and the Moon, its closest approach for at least the next two centuries. And you can also catch a glimpse of the asteroid by the power of the internet.

Is there a perfect voting system? In the 1950s the economist Kenneth Arrow asked himself this question and found that the answer is no, at least in the setting he imagined.

Ben Allanach is a theoretical physicist who has worked at CERN and is interested in something called supersymmetry, which predicts particles that could be dark matter and might be produced in the collisions at CERN. Watch Ben explain it all in this TEDx lecture.

From the makers of Dimensions comes a great free online movie exploring dynamical systems, the butterfly effect and chaos theory by means of stunning visuals accompanied by a beautiful musical score.

Every year the London Mathematical Society puts on a pair of popular lectures that are well worth seeing. This year's topics are maths in the court room and the mysteries of additive number theory. Find out more here.

Cosmologists gathered in the Netherlands last week to discuss a new view of the Universe. The Universe as seen by Planck was an international conference to discuss the recently released scientific results from the Planck satellite, including two particularly striking snapshots of the early Universe.

Find out why physicists believe that they might be in a lecture by John D. Barrow at the Bath Royal Literary and Scientific Institution on April 13th.