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X-rays

The portion of the electromagnetic spectrum that has a very short wave length. It has a wavelength longer than gamma rays, yet shorter than visible light. X-rays can penetrate various thicknesses of all solids, and when absorbed by a gas, can result in ionization.

Xenon

An inert gas that occurs at extremely low concentration in the atmosphere.

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Queensland drought: Stranger amazes graziers by travelling 2,000 kilometres to lend a hand

11:18 EST

A western Queensland family has been overwhelmed by the generosity of a stranger who volunteered to help on a drought-stricken station.

Cyclone in July: Weather bureau declares Raquel poses no threat to Queensland

09:46 EST

Queensland forecasters have named Raquel as their first ever recorded July cyclone, which has formed this morning north of the Solomon Islands.

Vanuatu president's decision to leave country as Cyclone Pam approached criticised by Save the Children

09:34 EST

The decision by Vanuatu's president and senior disaster officials to fly to a conference in Japan as Cyclone Pam bore down on the Pacific nation in March made response efforts more difficult, aid group Save the Children says.