The Wirecutter is a highly flawed review site, but at least it's a real one. There are vanishingly few left for general consumer products. There's WC, Consumer Reports, and what else? They've seem to have all been killed off. When I'm researching some category of product, I feel lucky if I find any professional reviews written by people who have actually touched the thing they're reviewing. I know we've all had the experience googling "reviews of X" only to get overwhelmed with SEO spam. Forget finding something written by somebody who has experience with it. It's hard enough to find something written by a human.
The FREND instrument searches for neutrons to map hydrogen content in the Martian soil.
FREND revealed an area with an unusually large amount of hydrogen in the colossal Valles Marineris canyon system: assuming the hydrogen we see is bound into water molecules, as much as 40% of the near-surface material in this region appears to be water.
How confident are we that hydrogen detected really is water?
