Agriculture
Cleaning Up Fish Farms
Protecting Cows—and People—from a Deadly Disease
Where Have All the Bees Gone?
Amphibians
Frogs and Toads
Salamanders and Newts
Poison Dart Frogs
Animals
Armadillo
Walktopus
Lives of a Mole Rat
Behavior
Pollution at the ends of the Earth
Calculating crime
The Disappearing Newspaper
Birds
Lovebirds
Pigeons
Kiwis
Chemistry and Materials
Spinning Clay into Cotton
Earth-Friendly Fabrics
Sticky Silky Feet
Computers
Nonstop Robot
Computers with Attitude
Galaxies on the go
Dinosaurs and Fossils
An Ancient Spider's Web
The bug that may have killed a dinosaur
A Big, Weird Dino
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Results of GSAT are in schools this week
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Earth
Earth Rocks On
A Dire Shortage of Water
Giving Sharks Safe Homes
Environment
Seabirds Deliver Arctic Pollutants
Lessons from a Lonely Tortoise
When Fungi and Algae Marry
Finding the Past
Watching deep-space fireworks
Traces of Ancient Campfires
Stonehenge Settlement
Fish
Barracudas
Puffer Fish
Seahorses
Food and Nutrition
Healing Honey
How Super Are Superfruits?
Eat Out, Eat Smart
GSAT English Rules
Problems with Prepositions
Subject and Verb Agreement
Capitalization Rules
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Mastering The GSAT Exam
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42,000 students will sit for the GSAT Exam in two weeks
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42,000 students will sit for the GSAT Exam in two weeks
Access denied - Disabled boy aces GSAT
GSAT Exam Preparation
GSAT Mathematics
Math Naturals
How a Venus Flytrap Snaps Shut
Deep-space dancers
Human Body
Prime Time for Broken Bones
A Fix for Injured Knees
A Long Trek to Asia
Invertebrates
Snails
Hermit Crabs
Oysters
Mammals
Pomeranians
Polar Bear
Sea Lions
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
How children learn
Choosing a Preschool: What to Consider
Physics
Black Hole Journey
Electric Backpack
The Pressure of Scuba Diving
Plants
Farms sprout in cities
Plants Travel Wind Highways
Fast-flying fungal spores
Reptiles
Sea Turtles
Crocodiles
Asp
Space and Astronomy
Dark Galaxy
Return to Space
Wrong-way planets do gymnastics
Technology and Engineering
Dancing with Robots
Roll-Up Computer Monitors to Go
Musclebots Take Some Steps
The Parts of Speech
What is a Preposition?
Pronouns
What is a Noun
Transportation
Tinkering With the Basic Bike
Seen on the Science Fair Scene
Charged cars that would charge
Weather
Science loses out when ice caps melt
A Dire Shortage of Water
Recipe for a Hurricane
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Black Holes That Burp

It wouldn’t be very pleasant to go near a black hole. Armed with an enormous amount of gravitational pull, the incredibly tiny but supermassive object would swallow you alive and stretch you into a piece of spaghetti in the process. Black holes are black because they engulf everything in sight, including light. Now, scientists say, it looks like some black holes actually spit out as much material as they suck in. Black-hole burps may even fill outer space with many of the building blocks of life. The new observations come with the help of NASA’s Chandra X-ray Observatory and the European Space Agency’s XMM-Newton satellite. George Chartas of Pennsylvania State University and his colleagues used the spacecraft to look at two quasars—extremely bright and distant beams of high-energy light powered by rotating black holes. By looking at magnified light from the two quasars, Chartas and his team were able to detect for the first time high-energy winds coming out of black holes. The winds travel at 20 to 40 percent of the speed of light (which is still really, really fast). And they spit out billions of suns worth of gas, including oxygen, carbon, and iron—important elements necessary for life. So, even though black holes make up only a tiny percentage of a galaxy’s mass, they may play an important role in galaxy evolution. Still, with all the sucking, spitting, and burping they do, it probably wouldn’t be a good idea to try to look inside a black hole, even if you could get close enough!—E. Sohn

Black Holes That Burp
Black Holes That Burp








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