Could mouse sperm orbiting Earth be the future of humanity?

Oldest human DNA reveals lost branch of the human family tree

Scientists have recovered the oldest Homo sapiens DNA from remains in a cave beneath a castle in Ranis, Germany. The DNA, dated to about 45,000 years ago, belonged to six individuals, including a mother and daughter. These ancient genomes carried traces of Neanderthal ancestry, revealing interbreeding about 1,500 years earlier. This discovery aligns with broader research, suggesting a significant period of gene exchange between Homo sapiens and Neanderthals occurred between 50,500 and 43,500 years ago.The study highlights how genetic inheritance from Neanderthals, especially traits related to immune function, metabolism, and skin pigmentation, helped humans adapt to harsh Ice Age environments. Despite their ancient presence in Europe, the Ranis population eventually went extinct, leaving no trace in modern human ancestry. Their physical traits, including dark skin and eyes, reflected their recent African origins.The research also examined "archaic deserts," regions of the human genome devoid of Neanderthal DNA, likely due to infertility or diseases in hybrid offspring. Neanderthal gene contributions, however, remain crucial to understanding human evolution, particularly as modern humans migrated and adapted outside Africa.The cave where the ancient human remains were found is located beneath a castle in Ranis, Germany. Martin Schutt/picture alliance/Getty ImagesThese findings refine the timeline of Homo sapiens' migration and interbreeding, suggesting that the major wave of human migration out of Africa had concluded by 43,500 years ago. The study underscores the complex story of human evolution, where survival was not guaranteed, and some populations, like Neanderthals and the Ranis group, disappeared. This groundbreaking work offers new insights into our shared history with Neanderthals and the adaptive power of ancient gene exchanges.

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Say goodbye to Thanksgiving bloat with these 3 post-meal moves

Thanksgiving often marks the beginning of a festive season filled with hearty meals and celebrations, but post-meal sluggishness and bloating are common experiences. While indulging in a nap might seem tempting, engaging in simple activities can aid digestion, reduce bloating, and boost energy levels, leaving you refreshed instead of weighed down. Here are three effective ways to combat post-meal heaviness and stay energized:1.Take a Walk Walking is a simple yet powerful way to support digestion and blood sugar management. A short 10-20 minute stroll around your neighborhood or at a nearby park after a meal can ease bloating and re-energize you. This activity is also an excellent opportunity for family bonding and can inspire others to adopt regular post-meal walks.2.Play Outdoor Games For those looking for more dynamic activity, organizing a game of touch football, kickball, or Frisbee with family and friends can be both fun and beneficial. Outdoor games encourage healthy movement, shift focus from food to shared experiences, and create memorable moments. They also foster laughter and connection, making the holiday even more special.3.Practice Digestive Stretches If outdoor activities aren’t feasible, gentle yoga-inspired stretches can help. For example, a side-lying twist can stimulate digestion by gently compressing the abdominal organs. Lie on your side with a pillow between your knees, rotate your upper body, and hold the position for a few breaths. Such stretches are soothing for the stomach and can also promote better sleep.A simple side-lying twist may help provide digestive relief after a big meal. Aaron LockwoodIncorporating these simple post-meal practices into your routine not only enhances holiday enjoyment but also offers long-term wellness benefits. These habits can be applied year-round to improve digestion, reduce bloating, and maintain steady energy levels, helping you feel lighter and more in tune with your body.