It's a blog! Mainly of book reviews.
Hundreds of genetic variations are implicated in autism. Many are associated with brain development in some way.
Research on environmental influences hasn't come up with much, is comparatively poorly researched; low increased risk if the mother uses an SSRI (type of anti-depressant) immediately prior to pregnancy or during the first trimester seems the most robust.
There's a brief but fascinating discussion of "junk" DNA. The idea that much of our DNA serves no function (is "junk") has only fairly recently been conclusively demonstrated to be false. I knew this - what I didn't know is that one way (not sure if it's supposed to be the only way or not) that the "junk" actually affects the system is by acting as on-off switches for genes thousands of base-pairs distant along the strand because they are actually physically proximate! Chromosomes aren't straight double-helices - they'd be about 10 ft long if they didn't fold up into dense little bundles, allowing them to fit into the cells that form our bodies. So the folding brings genes separated by long distances along the strand to close proximity by the shortest route - and this allows the "junk" to influence the "coding" DNA!