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While individuals all may not have the same emotional response to all colors, in general, certain color schemes around us can affect mood. Reds and oranges are stimulating, whereas blues and purples promote relaxation. Gray, brown, black, and white are emotionally dulling—this may be good for doing important work, but it's hardly inspiring in a creative sense. If you crave inspiration, try a little redecorating!

In 1972, the king of Bhutan reported of his country, "Gross National Happiness is more important than Gross National Product." This idea was so popular that it actually became official policy in Bhutan, and a Gross National Happiness Commission still works to protect what it calls the four pillars of happiness: equitable development, environmental conservation, promotion of culture, and good governance. Since then, other countries have also employed a happiness index to get a better pictures of their citizens' quality of life. And if you're looking for ways to boost your own mood, here are 75 Genius Tricks to Get Instantly Happy

The only female graduate student in the astronomy department at Cambridge University in 1967, Jocelyn Bell Burnell made an important discovery—four pulsing light sources in deep space, now called pulsars. Her team published a paper, but her advisor, Antony Hewish, was listed as the first author. When the Nobel Prize committee decided their work deserved the prestigious award, only Hewish and another man received the prize. Finally, in 2018, Bell Burnell has been awarded the Breakthrough Prize in Fundamental Physics, one of only four such awards ever given out. She has vowed to use the $3 million prize to establish a scholarship fund for struggling grad students

Both scientists and rats spend long hours in laboratories all over the world, so maybe it's not surprising that, at some points, a group of scientists decided to try to tickle their four-legged friends. Once a rat is used to being touched by your hand, you can gently brush its back and belly, making it squeak and jump for joy. Best of all, the rats enjoy this type of play—when they got back to work, the scientists found out that tickling stimulates the release of dopamine, a neurochemical associated with pleasure, in rat brains.

There are hundreds of stories of human swimmers or surfers who end up in shark-infested waters but make it out safely because of dolphins. Pods of dolphins have been known to surround humans in distress, keeping sharks away. There are several theories as to why this happens—perhaps the adult dolphins are acting like parents defending their offspring, or perhaps the dolphins can recognize another mammal in trouble and act as they would if it were another dolphin. Regardless, many humans owe their lives to these intelligent sea creatures.

Not only do penguins mate for life, but they also have a ritual to mark the occasion. But since they can't get down on one knee, male Gentoo penguins hunt avidly for the smoothest, roundest pebble to present to their potential mates. If the female accepts his "proposal," she adds the pebble to her nest and the two will soon breed. So important are these pebbles that male penguins have been known to fight over the most perfect ones!

An 81-year-old Australian is known as The Man with the Golden Arm, but not because of his strength or speed. Instead, James Harrison has a very rare type of blood plasma that can be used to treat Rhesus disease, which can occur during pregnancy. He's been donating roughly every three weeks since 1954, though in May of 2018, he surpassed the age limit allowed for plasma donations. Nevertheless, the 1,137 donations he made over his lifetime is estimated to have saved the lives of 2.4 million babies, including that of his own daughter.

In 2012, the Cuddly Catz animal rescue group started a program to pair cats with behavior problems with inmates at the nearby minimum-security Larch Correctional Center. Nonviolent offenders who meet certain criteria can volunteer to adopt a cat and receive training on how to give it the attention, affection, and socialization it needs to stop scratching, biting, or spraying. The cat's behavior improves, but the prisoners also reap the benefits of animal therapy and learn how to care for another living thing. Similar programs exist where inmates train seeing-eye dogs

At the 1992 Olympics in Barcelona, British sprinter Derek Redmond went into the semifinal round of the 400m race with the fastest qualifying time. Just after the 250m mark, however, he tore his hamstring. Somehow, he got back up and continued hobbling down the track

All whales are social animals, but the s***m whale in particular displays an ability to recognize and remember other individual whales. They even show preferences for certain other whales that remain consistent over their lifespans. Just like you'd rather spend your time with your best friend or your favorite aunt, s***m whales have WFFs (whale friends forever) whom they love to hang out with. And for more amazing info about the animal kingdom, check out these 50 Amazing Animal Facts.