Just a reminder that we're eagerly after your experiences with cancer– are you or a loved one fighting now? have you lost someone? are you or a loved one a survivor?– for our marathon charity drive later this year. We hope to have a selection of your experiences to read on the air. Our goal in this, as I've said, is to keep the focus on the real people's lives that have been impacted as there's a tendency to look on the goal of finding a cure for cancer as a sterile clinical problem for researchers in a laboratory. Help us please guys. Help us fight!

This week on Think Atheist Radio, Mr. Brian Clegg. Mr. Clegg studied the Natural Sciences, specializing in experimental physics, at Cambridge University. After graduating he then gained a second MA, this time in Operational Research, a degree focused on mathematics and probability, at Lancaster University. An acclaimed science writer, published in numerous outlets such as Nature, The Times, and The Wall Street Journal, and having authored numerous popular science books, he is a Fellow of the Royal Society of Arts. His books include How to Build a Time Machine: The Real Science of Time Travel; The God Effect: Quantum Entanglement, Science's Strangest Phenomenon; Before the Big Bang: The Prehistory of the Universe; A Brief History of Infinity: The Quest to Think the Unthinkable. His newest book, just released this week, is Gravity: How The Weakest Force in the Universe Shaped Our Lives. We asked Mr. Clegg to join us for a chat about the history of our understanding of gravity, our gradually improving conception over the 20th century, and about what comes next. Please join us for a fascinating conversation!

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Sam Harris is back on the subject of airport security profiling of Muslims with a remarkably informative and interesting written debate between himself and security expert Bruce Schneier. It's a long read but rewarding.

Stephen Law on William Lane Craig's assertion that atheists know God exists.

Analysis shows that Congress speaks at a 10th grade level. A full grade level lower than 7 years ago. 17 of the stupidest 20 are Republicans. You have to go to 15 before you find a Democrat.

Practitioners of "alternative medicine" who don't abide by the rules of evidence-based practice may run afoul of the law.

The SpaceX rocket blasted off the ISS. The Dragon capsule went in to orbit without issue. Astronauts on board the ISS took video and snapped pics of Dragon as it passed beneath them. Then Dragon closed in on the ISS to be captured. That went off without a hitch. Commercial space flight is a reality.

The legal challenge that could stop homeopathy in its tracks.

Blind mice regain sight when scientists persuade their optic nerves to grow.

Why gay marriage divides the world. It's more than ideological. There's deep moral and psychological roots.

A message to girls about the religious men who fear you. It's awful that we have to write this kind of stuff to the young women out there but we do and this is excellent.

The latest development in cosmology point to toward the possibility that our universe is just one of billions. Brian Greene: Welcome to the Multiverse.

A Republican (what else?) Mississippi State Representative really hat....

PZ Myers on the "objective morality" gotcha.

A North Carolina pastor said in a sermon that we should put all the gays in a pen and starve them until they die.

Who is still going to church? Turns out... hardly anyone.

Skin from heart attack patients transformed into beating heart cells.

DARPA has awarded $500,000 to a 100-Year Starship Project, a group aiming to build an interstellar spacecraft within a hundred years.

Being "born-again" linked to brain atrophy.

New study says chimps's personalities are like humans's.

Controversy this week as allegations are that some well known male speakers at atheist conventions are known to female speakers and attendees to be aggressive and creepy and predatory. How to handle this information is the question. Hemant Mehta suggested that it may be about time to start naming names.

A newly discovered organ in a group of whale species helps coordinate their titanic mouthfuls when eating.

Government money goes to fund creationism.

Faith is a cognitive sickness.

An analysis of a recent paper challenging the existence of Dark Matter finds that Dark Matter is quite safe after all.

A new generation of young women in Britain is being forced to re-fight the battle for abortion rights.

A year has passed after Harold Camping made his apocalyptic prediction of the end of the world. Tracking down his followers to see how the movement has fared.

Strong support for gay marriage now exceeds strong opposition.

Kids are just fine being raised in same-sex households.

How the web is killing faith.

New evidence from meteorites suggests that the basic building blocks of life are present on Mars.

The scientific reality behind genetically modified crops.

The earliest music instruments have been found and date to 42,000 years.

Despite attempts by conservatives to try to rewrite the history of the struggle for civ..., the fact is, they were on the wrong side of the issue.

A new poll on American attitudes on abortion don't mean what Republicans would like to think.

Tell people not to make excuses for homophobia they wouldn't make for racism.

The Religious Right champions religious freedom, but only for themselves.