Long-distance ocean travel began with watercraft using zero-emission propulsion systems. Gigantic sails harnessed the power of the wind. As technology developed, oceangoing craft switched to fossil-… [+1969 chars]
Coronal mass ejections (CMEs) are large expulsions of plasma and magnetic field from the sun's atmosphere — the corona. Compared to solar flares — bursts of electromagnetic radiation that travel at… [+12947 chars]
Kavachi Volcano, an active submarine volcano in the Solomon Islands, has long been home to sharks. However their once-peaceful playground in the southwest Pacific Ocean recently became a bit less ser… [+2509 chars]
