Scientists Have a New Explanation for Mysterious Sand Spikes - The

Spike in Gray Whale Deaths Is A Mystery To Scientists – NBC 7 San Diego

Curiosity rover's discovery of methane 'spikes' fuels speculation of life on Mars, Mars

After Alien Doorway, NASA's Curiosity Rover Finds Bizarre Spikes On Mars

German Geologists Study Mt. Signal to Solve Mystery - Calexico Chronicle

Alien craft could have caused 'most bizarre rock' on Mars, scientists claim

500 million-year-old worm with 'shuriken' spikes named after gigantic 'Dune' sandworms

Mysterious soil virus gene seen for first time

Mysterious holes discovered on ocean floor puzzle experts

Mystery 'spiky' debris on Mars could be doomed spacecraft as scientists admit 'alien UFO crash cannot be ruled out