>> mike: take a look at this. white plumes of acid mixed with extremely shards of glass filled the sky over hawaii as molten rock from the kilauea volcano board into the ocean. this toxic steam cloud is the latest hazard from the volcano eruption. it's born from a chemical reaction when lava touches seawater. it depends on the beast but wildlife experts say a general rule when facing a potentially deadly encounter is hold your ground and make a lot of noise. dan springer tonight with a story about how the usual advice didn't pan out tragically. >> the killer mountain lion was a 3-year-old male and it certainly looks like low weight may have been a factor. cougar attacks are rare and fatalities almost never happen. the two mountain bikers who were mauled have been identified, 32-year-old asked jay brooks