Chipping in

Extraterrestrial observations

The Hubble Telescope helps bring quasars closer

The pulse of speed

A theory is taking shape which might enable us to observe the motion of electrons

Genetic signature

Colour code

Constant inconsistency

Sharper limits set on how much quantities so far considered to have a fixed value can vary

Electronic secretary

Crystal copy

Scientists are trying to duplicate the skill of marine invertebrates at making crystals

Rough roads

A coating of concrete could entend the life of a road to at least twice its normal term

Laser duster

Plant parley

Some seed

Forgers beware

It would be almost impossible to fool a new electronic signature verification system

Red alert

On elastic wings

What powers an insect's flight?

Deceitful dilemma

A theory developed to study chess and poker offers an insight into why some animals cheat

Checkmate

A matter of mass

The neutrino, an elementary particle, may not be massless, as assumed

Pre-natal healing

The jigged jaw Puzzle

A new fossils throws open the debate on Homo erectus

First fatality

The certainty about the first confirmed case of AIDS is over

Bug eat bug

Chip shots

Finesse is female

Feminists may not like it, but women are softer, gentler... uh, feminine, says science

Salivary safeguard