Yi triumphs over one

A sea invasion

A river with a difference

Nature is carcinogenic

Overdose

Parallel problems

Astronomical distances

Info tangle

Great shakes

Of birds and beaks

Hoary tales

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