Costa Rica lost nearly half its forests in just a few decades, then planted millions of trees and became one of the world's greatest reforestation success stories |

Costa Rica lost nearly half its forests in just a few decades, then planted millions of trees and became one of the world’s greatest reforestation success stories |

By the 1980s, Costa Rica was facing an environmental crisis that few could have imagined just decades earlier. Once blanketed by lush tropical forests, the Central American nation had lost nearly half of its tree cover as logging, cattle ranching and agricultural expansion rapidly transformed the landscape. Wildlife habitats shrank, biodiversity declined, rivers became increasingly…

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Quote of the day by John Cockcroft: "Human progress has always depended on the achievements of…" - a Nobel laureate's tribute to the father of India's nuclear age |

Quote of the day by John Cockcroft: “Human progress has always depended on the achievements of…” – a Nobel laureate’s tribute to the father of India’s nuclear age |

John Cockcroft (Image: Wikipedia) Some people don’t just contribute to the world. They bend its direction. The British physicist John Cockcroft, himself a Nobel Prize winner who helped split the atom, believed history turns on such rare figures. Human progress has always depended on the achievements of a few individuals of outstanding ability and creativity,…

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Spanish conquerors described a terrifying tower made of thousands of human skulls, historians thought it was propaganda, then archaeologists found it beneath Mexico City | World News

Spanish conquerors described a terrifying tower made of thousands of human skulls, historians thought it was propaganda, then archaeologists found it beneath Mexico City | World News

When Spanish conquistadors entered the Aztec capital of Tenochtitlan in 1519, they described a sight so horrifying that many later historians believed it had to be exaggerated. According to their accounts, a massive tower and racks built from thousands of human skulls stood near one of the city’s most important temples. For centuries, these descriptions…

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Florida's Burmese python challenge can't wipe out invasive snakes from the Everglades. Awareness is the real victory, officials say |

Florida’s Burmese python challenge can’t wipe out invasive snakes from the Everglades. Awareness is the real victory, officials say |

Officials and participants display a Burmese python during the launch of the 2026 Florida Python Challenge. Florida’s annual effort to tackle one of the world’s most notorious invasive species is returning this July, but wildlife officials are making one thing clear: the event is not expected to eradicate Burmese pythons from the Everglades. Instead, they…

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California's earthquake stress levels are now the highest seen in 1,000 years, study finds |

California’s earthquake stress levels are now the highest seen in 1,000 years, study finds |

For decades, discussion about California’s next major earthquake has tended to revolve around a single fault. The southern stretch of the San Andreas has long been viewed as the state’s most closely watched geological boundary, largely because it has remained quiet since the mid-19th century despite continuing movement beneath the surface. That long silence has…

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NASA's Hubble spots two enormous galaxy clusters merging billions of light-years away |

NASA’s Hubble spots two enormous galaxy clusters merging billions of light-years away |

Far beyond the Milky Way, vast collections of galaxies continue to drift, gather and occasionally collide. One such region has drawn astronomers’ attention for decades. Known as CL0016+1609, this immense galaxy cluster contains hundreds of galaxies bound together by gravity and shines strongly in X-ray light. A newly highlighted image from NASA’s Hubble Space Telescope…

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