A buildup of 'goo' in an appetite-control centre of the brain might worsen obesity and diabetes. In mice, researchers found that the scaffolding supporting neurons that adjust sensations of hunger changed as the mice gained weight on an unhealthy diet. The result was a thick and sticky goo that prevents these neurons from processing insulin signals.
When the scientists chemically slowed the goo's formation, the mice lost weight and became more responsive to insulin. The findings may point to new drivers of metabolic conditions, but investigating whether this goo forms in humans might be difficult.
China's greenhouse-gas emissions could be about to peak, if they haven't already. The peak would be a major climate milestone, and comes well ahead of Beijing's pledge of peak emissions before 2030.
However, some researchers are uncertain about the accuracy of current peak predictions and worry that China's road to net zero afterwards will be a challenge.
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