In 1931, Karl Jansky was hired by AT&T to search for sources of static that might interfere with radio waves for transatlantic communications. Jansky identified static from thunderstorms and random radio noise from devices on Earth, but he also found a radio hiss from the Milky Way galaxy.
After World War II, astronomers constructed more radio telescopes with greater sensitivity to faint radio signals from space. In the 1970s, the National Radio Astronomy Observatory built the Very Large Array (VLA) radio telescope, on the plains of San Agustin, New Mexico. The VLA is well equipped to hunt...
In 1931, Karl Jansky was hired by AT&T to search for sources of static that might interfere with radio waves for transatlantic communications. Jansky ...
Struggling up the mountainside in a fierce storm, sixteen-year-old Bin-daa-dee-nin tries to survive. The Mescalero Apache has lived off the land in southwestern New Mexico, hunting and raiding since the death of Apache leader Victorio last October 1880.
Just before dawn, under a full moon, Bin-daa-dee-nin finds a black-and-white horse whose intelligence and beauty surpass that of any horse he's ever seen. Bin-daa-dee-nin trains the surefooted pinto to run fast on command so that he can use him to hunt and on raids. But when the army attacks, the horse disappears.
Fourteen-year-old Sarah...
Struggling up the mountainside in a fierce storm, sixteen-year-old Bin-daa-dee-nin tries to survive. The Mescalero Apache has lived off the land in so...
Whether they're darting across the evening sky in search of their breakfast or hanging from their upside-down roosts in caves, old mines, buildings, and trees, bats play a crucial role in the natural world but are all too often misunderstood by people who think of them as strange birds, flying rats, or Dracula in disguise. Karen Taschek's thoughtful and engaging exploration introduces young readers to the complicated and fascinating world of bats, both in their natural habitats and in the human imagination. Containing a wide range of bat-related topics, from their relationships with...
Whether they're darting across the evening sky in search of their breakfast or hanging from their upside-down roosts in caves, old mines, buildings...
The science of tree rings--"dendroclimatology"--had not been developed when John Wesley Powell made his epic voyages down the Colorado River in 1869, 1871, and 1872. Nevertheless he observed that the rising and falling of the river differed over the years and came to understand the important role these variations played in the lives of people trying to live in the West.
While Powell was braving the Colorado River's rapids, a tree in southwestern Colorado was putting on rings. In 1869 it was a modest ring. In 1871, the year Powell returned to begin his second trip, the ring was remarkably...
The science of tree rings--"dendroclimatology"--had not been developed when John Wesley Powell made his epic voyages down the Colorado River in 186...
It's 1905 in New Mexico Territory, and John Chavez, a survivor of Victorio's band of Mescalero Apache warriors whom we first met in Horse of Seven Moons, is now an adult with teenage children of his own. Life is difficult on the reservation, and after the death of his beloved wife, John decides to send his daughter, Isabel, to the Indian Industrial boarding school in far-off Carlisle, Pennsylvania, to get a fine education and leave the reservation village. Reluctantly, Isabel agrees to go, although she doesn't want to leave her family or the horses she secretly trains on the reservation.At...
It's 1905 in New Mexico Territory, and John Chavez, a survivor of Victorio's band of Mescalero Apache warriors whom we first met in Horse of Seven Moo...
