Answers to Science Questions

18 December 2005

Was the Star of Bethlehem a real astronomical event?

18 December 2005

Why can't you tickle yourself?

18 December 2005

When you put wood on a fire, why does some wood spit and crackle while other wood burns slowly and quietly?

11 December 2005

How and why does your skin get thin when you get older? Does it really get thin or is there something else going on?

11 December 2005

Why would our eyes have developed to take in more information than our brains can process? Secondly, if we only use...

11 December 2005

If your voice goes croaky, does anything happen to your voice box to make it go all croaky?

04 December 2005

We have a picture of my wife's father in the police force in 1947. He's wearing a hat and holding a truncheon...

04 December 2005

How can someone extract and sequence DNA from something that's been buried for centuries?

04 December 2005

When you have DNA left on a piece of clothing, how do modern techniques match the DNA with the guilty suspect?

04 December 2005

Are solar panels on spacecraft mistaken for UFOs sometimes? - Matthew has emailed us with an addition to an answer last...

04 December 2005

I've heard that there's a single origin for the emergence of Homo sapiens. Is there any scientific background...

04 December 2005

What is the possibility of erroneous matching of DNA? There was a case I saw about 8 years ago in which a man was...

04 December 2005

I've heard that bone marrow transplants can cause havoc with DNA testing. Is this the case, and if so, how can the...

04 December 2005

Is there any such thing that could erase or change DNA?

27 November 2005

Why is it that we like drinks with gas, like beer or coke? If we drink these beverages without it, they taste bad, but...

27 November 2005

What's gravity made of?

27 November 2005

Is it true that someone's head would explode if you went out into space without a helmet on?

27 November 2005

Is it possible to see a gamma ray burst in the sky? I saw something in the sky flash on and off one night.

27 November 2005

We're told that photons can't escape from a black hole, and I was wondering if gravitons can escape from a...

27 November 2005

How far is the nearest galaxy?

27 November 2005

How do scientists check the distances between planets, and how accurate are their methods?

27 November 2005

From a scientific rather than a religious point of view, why should there be a universe? Why isn't there just...

27 November 2005

How do scientists measure the life of the sun?

27 November 2005

How many human years are there in a light year?