Articles for Grade 3

Biologists have long believed the common ancestor of all primates was a small, deliberate animal which used its grasping hands and feet to scamper along thin branches foraging for fruits and insects. They theorized that the leaping skills came later, after the proto-primate evolved into two distinct groups — wet-nosed primates like lemurs and dry nosed primates that include monkeys, apes, and humans. However, the discovery of a perfectly preserved 52-million-year-old fossil seems to suggest that the first primate might have been leading an impressively acrobatic lifestyle, leaping from one tree to another....

Asking a patient to hum piano melodies and play an instrument while undergoing brain surgery may sound like a strange request from a doctor. However, that is precisely what a team of brain specialists, led by University of Rochester Medical Center’s Web Pilcher, requested Dan Fabbio to do as they were removing his tumor....

Hurricane Maria, which tore through Puerto Rico in late September, knocked down 95 percent of the island’s cell towers and electric poles. While cellular telephone and utility companies have been frantically trying to restore the services, approximately 80% of Puerto Rico still has no wireless service or electricity....

Sea spiders, which have inhabited Earth for over 500 million years, are fascinating creatures. The marine arthropods, which range in size from a millimeter long to as big as a dinner plate, have eight jointed legs that convene around a tiny body. Since their torsos are so small, they use their legs to conduct normal body functions such as digestion and reproduction. Now, it seems the creatures also have a unique breathing mechanism....

Earlier this year, National Geographic released a list of the world’s 21 most beautiful beaches. High among them, especially for sea-shell lovers, is Shell Beach. Located in the Shark Bay World Heritage Area in Western Australia, it is home to a 37-mile (60 km) stretch of white cockle shells....

Wildlife filmmakers know to expect the unexpected when observing animals in their natural habitat. For a PBS Nature film crew trying to stealthily capture footage of Arctic foxes in the freezing Arctic tundra that meant losing a hidden camera to the curious animals....

October is pumpkin month in the US. For most people, this means devouring the various pumpkin-filled treats or visiting pumpkin patches to pick out the perfect gourd to carve for Halloween. However, for some, it means the chance to showcase their giant produce at pumpkin weigh-offs. Though there are numerous such contests held across the country, the “Super Bowl” takes place annually at Half Moon Bay, CA, aka “The World Pumpkin Capital.”...

Aston Martin, the maker of James Bond’s preferred cars, may soon have another offering for the British secret service agent – a luxury submarine. However, this underwater craft is not reserved exclusively for Bond, but available to anyone that can afford its hefty $4 million cost....

In late September, Gregory Breton and his team were returning to their campsite after spending seven long hours scouting the hot, dusty, Moroccan Sahara for sand cats. Suddenly, just four kilometers away from their destination, they noticed three pairs of gleaming eyes. Upon getting closer, the researchers realized they had stumbled upon something that, to their knowledge, had never been encountered in the wild before — sand cat kittens!...