That should be Dark *Energy* Still Confuses Scientists. Dark Matter is also mighty confusing, but at least we have some pretty compelling evidence that it exists and know a lot about what it's not.
It always gets me that the kids wear helmets (incorrectly in some cases) and the adults don't. It's great you're getting out and exercising with the kids, but let's set a good example while we're at it, eh?
I'm skeptical of this. IIRC, pupils react together, so even one eye covered will react to a bright light in the other eye. Pupils of different sizes is a good sign of brain injury.