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We may finally know why big dogs die younger than smaller ones

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October 9, 2026

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Top Science News

Big dogs age faster at an epigenetic level, new study finds

A new study that tracked dogs' aging by reading tiny chemical tags on their DNA found that larger dogs aged more quickly.

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Question of the Day

Jonathan the tortoise is the oldest living land animal. How old is he in years?

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Analysis

OpenAI claims we've entered the AGI era — has GPT-6 Astra really demonstrated general intelligence?

OpenAI says its newly launched GPT-6 Astra model brings humanity to the threshold of AGI, but external evaluators argue that inflated lab metrics and opaque testing obscure its true reliability.

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Opinion

Would you trust AI to calculate your true 'biological age'?

HAVE YOUR SAY | Scientists have developed various AI tools to measure people's biological ages. Would you use one?

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Your Body

New robotic heart can mimic the different stages of heart failure

Heart failure with preserved ejection fraction (HFpEF) has no therapy that directly reverses heart stiffness, and current treatments mainly manage related conditions like blood pressure. Scientists hope this model could help them catch and treat the disease before it advances.

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Planet Earth

The central Pacific Ocean just broke a temperature record. Experts say it might signal a new kind of El Niño.

The sea surface temperature in a key El Niño region has exceeded 86 degrees F for the first time on record, hinting that the strength and location of some El Niño events are transforming.

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Animals

'Freakish' discovery of 9 million-year-old capybara tooth supports idea that Atacama wasn't always a desert

A 9 million-year-old capybara tooth was found in the Atacama Desert, a surprising find given that these rodents love water.

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Space

James Webb telescope pinpoints the most distant 'fast radio burst' ever seen, more than doubling the previous record

The James Webb Space Telescope has detected the farthest "fast radio burst" ever seen, providing more clues about these mysterious explosions.

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Astronomy & Astrophysics

The Milky Way is one galaxy — but it used to be thousands, new simulations reveal

A new supercomputer simulation traces how thousands of small galaxies eventually became the Milky Way.

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Health

Why are dengue cases surging in Florida this year? An 'unlucky' combination of factors, experts say

Dengue fever infections are booming in Florida this year, with more local cases than usual and the state's first dengue-related death in nearly a century. Why?

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