On this edition of Lab Notes, KPCC science reporter

fills you in on the wackiest news science has to offer:

• Why are Pluto's ice volcanoes a big deal? (Aside from the cool factor)
• If you want to repel mosquitos, a new study shows Victoria's Secret Bombshell perfume works better than some actual spray repellents.
• YouTube videos can go viral — and so can emotions. How positive tweets can spread cheer, according to a USC study.

To listen to the full interview, click on the blue audio player above.