High Levels of Anthocyanins Give Black Dahlias Their Color

black-dahlia

There are more than 20,000 varieties of dahlias, including white, yellow, deep reds, and magenta-colored flowers. The rarer black dahlias are especially alluring to horticulturists. A new study explores the reason for its intriguing color.

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Adult White Killer Whale Spotted in the Wild for the First Time

white-killer-whale-spotted

There have been sightings of white whales sporadically over the last few decades, but the only white killer whales (Orcinus orca) were young, including one with a rare genetic condition that died in a Canadian aquarium in 1972.

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