Archive for July, 2011

Vine Evolved Foliage to Attract Pollinating Bats

Thursday, July 28th, 2011

[T]he vine Marcgravia evenia from the Cuban rainforest has evolved to catch a bat’s attention by producing one to two dish-shaped leaves near its flowers. These dish-shaped leaves stand upright and point the concave side toward nectar-feeding pollinators. The dimensions of the leaves make them an acoustic beacon for bats.
The dish-shaped leaves (51mm x 35mm[,] [...]

Pluto’s 4th Moon

Wednesday, July 20th, 2011

The little planet that wasn’t now has a fourth moon:
Astronomers using the Hubble Space Telescope [have] discovered a fourth moon orbiting the icy dwarf planet Pluto. The tiny, new satellite—temporarily designated P4—was uncovered in a Hubble survey searching for rings around the dwarf planet. The new moon is the smallest discovered around Pluto. [...]

Additional Filters for GlimmerBlocker

Wednesday, July 20th, 2011

I just found these additional filters for GlimmerBlocker on the GlimmerBlocker Wiki:
http://glimmerblocker.org/wiki/Filters
The SSL:ify filter is decent alternative to the EFF’s HTTPS Everywhere Firefox extension.
There is also an RSS feed for new filters:
http://page2rss.com/page?url=glimmerblocker.org/wiki/Filters

Carbon-14’s Long Half-Life Explained

Monday, July 18th, 2011

Carbon-14 decays with a half-life of 5730 years, so it is often used to date objects up to about 50,000 years old (anything older would have negligible amounts of the stuff). But most other atoms that decay in the same way—by converting one of their neutrons into a proton—disappear in less than a day. [...]