Each week we uncover the most interesting and informative articles from around the world, here are 10 of the coolest stories in science this week.
Sea pickle invasion
Pyrosomes fished out of the water along the Oregon coast range in size from a few inches to more than 2 feet (0.6 meters) long.
Credit: Hilarie Sorensen/University of OregonThe waters off the Oregon coast are mysteriously awash with strange, jelly-like creatures that look like translucent slugs, according to the National Oceanic and Atmospheric Administration (NOAA).
Each pickle-like creature is, in fact, a colony made up of individual zooids that join to create a hollow, tube-like structure that has one closed end and one open end. (A zooid is a small, multicellular organism that makes up part of a colonial animal, and can arise from another zooid by budding or dividing.) [Read more about the alien invaders.]
Strange deaths
Orca whales have claimed the life of another great white shark by eating its liver and leaving it for dead, making it the fourth such gristly death in less than two months.
No one saw the sharks' last moments, but their injuries indicate that orcas, also known as killer whales (Orcinus orca), were the culprits, the researchers said. [Read more about the dead sharks.]
Lab-grown parts
Dr. Frankenstein, eat your heart out: Scientists have grown the pebbly green skin of sea turtles in the lab for the first time ever.
The International Union for Conservation of Nature and the U.S. Endangered Species Act list green sea turtles as threatened or endangered throughout their ranges worldwide. [Read more about turtle skin.]
Dangers of fireworks
With July Fourth just around the corner, it's important to keep an eye out for eye dangers: A man in India suffered severe eye injuries after a firecracker exploded close to his face, according to a new case report.
The doctors were able to remove the firework fragments from the man's left eye, though Dr. Jagat Ram, a professor of ophthalmology at the Postgraduate Institute of Medical Education and Research in India who treated the man, said removing all of the fragments took several sessions. [Read more about firecracker injuries.]
Coffee with a side of what?
How do you take your iced coffee? For some people in the United Kingdom, an investigative report from the BBC has sparked concerns that the drink may come with an unwanted add-in: a dash of fecal bacteria.
The sample size was very small, and all three coffee chains told the BBC that they are looking into the problem. [Read more about the caffeinated scare.]
Carved skulls
Fragments of three carved human skulls have been uncovered at a mysterious ritual site in Turkey.
Now, Göbekli Tepe has become a little bit more fantastic with the discovery of skull fragments carved with long, deliberate lines from the forehead to the back of the head. These discoveries reveal the existence of a "skull cult" in ancient eastern Anatolia, Gresky told Live Science. The ritual markings on these skulls are unlike those seen in any other civilization, though. [Read more about the ritual skulls.]
Weird creature
An odd extinct mammal that lived in South America during the last ice age had a long neck like a llama's, three-toed feet like a rhino's and what may have been a tapir-like trunk. This peculiar combination of traits fueled a mystery lasting nearly two centuries about how to classify the bizarre beast.
Macrauchenia fossils are fairly plentiful, but paleontologists nonetheless struggled to understand the creature because its combination of features was so unusual, said study co-author Ross MacPhee, curator in the mammalogy department at the American Museum of Natural History in New York. [Read more about the ancient mystery.]
Marriage and animals
That "squeee!" you feel when you look at pictures of cute puppies or bunnies might be good for your love life. A new study finds that looking at baby-animal photos may increase couples' levels of satisfaction with their relationships.
In the study, the researchers looked at 144 married couples who had been married for less than five years. The participants' average age was 28. Around 40 percent of the couples had kids, the researchers said. [Read more about animals and matrimony.]
New liquid water
Liquid water comes in two forms — low density and high density, scientists have found.
Water is essential for life (at least on Earth). And wherever liquid water exists — whether it's in icebound lakes or scalding hydrothermal vents — tiny microbes have been found. That is why scientists have been excited by the possibility of salty water flows and other evidence of ancient water on Mars — it means there may well have been life early on in the Red Planet's history. [Read more about the strange liquid.]
How eclipses work
If the sun were just a little bit bigger or the moon a bit farther away, total solar eclipses may never occur. But they do, and it turns out this celestial phenomenon that has changed human history, and our perspective of the universe, may be a sheer coincidence.
Such a nearly perfect match wasn’t always the case, however. Because the distance between the moon and the Earth is slowly changing, solar eclipses looked very different millions of years ago — and they will again, tens of millions of years in the future. [Read more about solar eclipses.]
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