61. Unsustainable Soil Use Can Cause Civilizations to Collapse
Earth is running out of soil.

62. Human Egg Harvesting Succeeds
In July, a group of doctors in Montreal presented a paper announcing a live birth resulting from an egg harvested before maturity...

63. The First Robot That Walks Like a Human: Lazily
Using a set of simple rules for moving and two knifelike feet, a robot in Germany has learned not only how to walk with a remarkably human gait...

64. Cloned Hamburger, Anyone?
Meat and milk from cloned cattle, pigs, and goats are safe to eat, the Food and Drug Administration has declared...

65. Physicists Expose Light’s Weird Quantum Nature
For the first time, physicists have observed in photons one of the weirdest and most basic phenomena in quantum mechanics...

66. Great Ancient City Unearthed in Syria
While the corpses of their enemies still lay on the battlefield, the victors celebrated by slaughtering cattle and holding a gigantic feast.

67. Mars Rover Delves Into Crater
After hunkering down for six weeks to ride out a planet-spanning dust storm, the Mars rover Opportunity got back to work...

68. Glue Clues From Geckos
A team of biomedical engineers and materials scientists at Northwestern University have invented a glue that behaves like the adhesive on a Post-it note...

69. Frozen Baby Mammoth Unearthed
Last May, a Siberian reindeer herder named Yuri Khudi chanced upon the world’s most intact mammoth remains...

70. How the Body Protects the Gut
Although the immune system is constantly patrolling for foreign invaders...

72. Crust Formed Early In Earth’s History
Geologists took a new look at a sequence of old rocks in southwest Greenland and discovered the earliest example yet of plate tectonics.

73. Parasite Invades Its Host’s DNA
In August, researchers reported that bacteria can transfer nearly their entire genome into the cells of a multicellular host.

74. Musical Scales Mimic Sound of Language
Throughout history, humans of many cultures have found approximately the same small set of sound frequencies musically appealing...

75. Stone-Age Asteroid May Have Wiped Out Life in America
Some 13,000 years ago, the Clovis people wandered North America, hunting ground sloths, mammoths, and other creatures...

76. Immune Cells Show Off Their Deadly Grip
Macrophages are big, fuzzy-looking immune cells that move through the blood and tissues, engulfing and destroying any foreign invaders...

77. The Biggest Squid Ever Captured
Some so-called fish stories turn out to be the real thing. In February, New Zealand fishermen plying the waters of the Ross Sea near Antarctica hauled up a real live sea monster...

78. Tablets Of Unknown Ancient Script Surface
In 2007, excavators of a remote site in southeastern Iran reported finding evidence of a writing system that dates back more than 4,000 years.

79. Salamander Tongue Strikes Like A Crossbow
The most powerful animal in the world? It might be the salamander.

80. Robots Evolve And Learn How to Lie
Robots can evolve to communicate with each other, to help, and even to deceive each other...