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Why do we get runny noses?

This question was asked by Bilal from Glasgow, UK.  The inside of your nose is full of tiny blood vessels…

https://www.flickr.com/photos/james_lumb/61281085/in/photolist-6q5Jr-6SheAe-dEcfrq-93gEM3-5TwaQs-6zMKdg-4Z3smB-5WwM2A-5TwnBw-764V2p-9izX4L-8pyhL1-6AnA5-aryzS2-9izWS3-7DXfKo-764TMV-9iwPqB-7fNeXo-dqQGTx-3gmGoz-2EPBat-dvgxga-7cGJsi-2EPjGv-4Wq8L-4j7PN9-a88p21-2EPkjD-eeKf95-2EPgGV-bH61QX-dZtGXt-8fwR24-6osJzG-3msTnx-3h75Pv-84C9w5-6osHBC-enVg4q-5NvZ48-6oox8B-a6uvo-b5UZL-m7UUxP-8XXjkv-mmVsHD-8XXjJT-8Y1ocs-2EPcT4

How do plasma balls work?

This question was asked by Hollie from Plymouth, UK.  Plasma is sometimes known as the fourth state of matter; it…

Hair comes in many gorgeous shades and styles. (Image: Eddy Van 3000).

Why do humans have hair?

This question was asked by Immy from Mersey Vale school, Stockport, UK.  Millions of years ago our ancestors were covered…

The Andromeda galaxy, as seen by the Hubble telescope. (Image: NASA/JPL-Caltech).

What is Galaxy Zoo?

In some areas of scientific study, producing data isn’t a problem; it’s analysing it all that can be difficult. Astronomy…