Some interesting sol 87 RAC soil animations.</p...

Some interesting sol 87 RAC soil animations.

The first animation shows the soil lose cohesion as the sun shines on the soil within minutes.

Best guess: soil "dries out", loses it's grip and slides down the scoop.

The second animation is the soil remaining on the tip of the scoop over five hours. There is virtually no change.

Best guess: Zap the soil with UV, dry it out -- and it is "dead". Of course, it may have been dead to start with.