Yes! It’s true — trees do talk! And they’re really wise and take forever to say anything, just like the Ents in The Lord of the Rings (which I realize are technically not “trees”).
Okay, so no, maybe trees don’t talk like that exactly. But scientists have long known that some trees do “communicate” via the emission of certain chemicals that nearby trees can detect using photoreceptors.
For example, when some trees are eaten by certain pests, it triggers a response in the tree itself, releasing chemicals into its leaves that inhibits the thing that’s eating them; at the same time, the tree may also release pheromones or other chemicals (or possibly even electrical waves) into the air, to communicate to nearby trees to release the protective chemicals into their leaves.
What’s really interesting is that trees only release these chemicals if they’re being eaten — not if their leaves are merely torn or damaged.
Trees sometimes also communicate during forest fires. Trees can release chemicals communicating to other trees to change the composition of their bark, making it more heat-resistant.
But trees don’t just share bad news; other studies show that flowering trees communicate when exactly to go into bloom. In fact, simultaneous blooming is another defense mechanism, since it results in fewer flowers being eaten by predators than a drawn-out blooming season does.
And it’s not just plants communicating between themselves. When tobacco, for example, is attacked by caterpillars, it releases a chemical into the air that attracts a certain kind of wasp that eats the caterpillars. Some varieties of corn detect when they have root worm, which is a beetle larvae, and release chemicals that attract nematode worms that eat the larvae.
Still, it’s a far cry from the events of the M. Night Shyamalan movie The Happening, where the plants on earth all team up with each other to take out their number one nemesis: human beings.
Next week: all about that real-life species of apple tree seen in The Wizard of Oz that’s so stupid you can fool them into throwing apples at you with reverse psychology!

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So where did this idea of the metal bikini pop up? The answer may be disappointing, but it isn’t surprising.
Back once again to explore the real-world origins of some fantasy conventions, this week’s edition of our Real-World Fantasy column takes a look at a generic character type used often in fantasy films, novels, and video games: Druids.
It is believed by some that the Druids were actually remnants of an even older Mesolithic religion, and that the followers of this old religion were the ones responsible for the building of Stonehenge and several other massive stone temples, but again, any concrete evidence has eluded historians.
In all of fantasy, there is no weapon that is more an icon of the genre than the classic, dependable sword. Sure, a quarterstaff is hardy, a crossbows gets the job done, and you’ll never find a weapon more impressive than the chakram, but at the end of the day, when we think of fantasy heroes, they’re probably holding swords.
A common iron sword that can be considered an ancestor of the more well-known medieval swords is the spatha, first introduced by the Roman Empire. Roughly measuring about 3 feet long, the spatha was actually a longer version of the Roman gladius, a relatively short sword.
Back for seconds after last week’s look at the simple torch, Real-World Fantasy, our regular column exploring the real-world implications of common fantasy conventions, will now seek to discover the truth behind those helpful entry and escape routes in so many of fantasy’s castles, mansions, and pyramids (not to mention the house in Clue!): the secret passage.
But it can’t all be flights of fancy. In order for us to relate to the story, there must be some truths, some attributes of the real world, for us to sink our teeth into. In other words, if nothing adhered to real, physical rules, the story just wouldn’t work. Sword fights, a popular theme in fantasy, have their origins in the real world, as do secret passageways, quests on horseback, etc. But how often do we as fantasy fans stop to consider just how these things work?

