快科技8月22日消息，当地时间8月21日，英国切斯特动物园发布消息，称一条名为“朱迪·福斯特”的23岁网纹蟒，成为世界上第一条接受人类电化学抗癌疗法并完全康复的蛇类。    Geneva, Oct 11 (UNI) Cascading global crises have left 54 countries — home to more than half of the world’s poorest people — in dire need of debt relief, the UN said on Tuesday.

In a new report, the United Nations Development Programme warned that dozens of developing nations were facing a rapidly deepening debt crisis and that "the risks of inaction are dire".

UNDP said without immediate relief, at least 54 countries would see rising poverty levels, and "desperately needed investments in climate adaptation and mitigation will not happen".

That was worrisome since the affected countries were "among the most climate-vulnerable in the world".

The agency’s report, published ahead of meetings of International Monetary Fund, the World Bank, and also of G20 finance ministers in Washington, highlighted the need for swift action.

But despite repeated warnings, "little has happened so far, and the risks have been growing," UNDP chief Achim Steiner told reporters in Geneva.

"That crisis is intensifying and threatening to spill over into an entrenched development crisis across dozens of countries across the world."

The poor, indebted countries are facing converging economic pressures and many find it impossible to pay back their debt or access new financing.

The UN agency said debt troubles had been brewing in many of the affected countries long before the Covid-19 pandemic hit.

According to data, 46 of the 54 countries had amassed public debt totalling $782 billion in 2020, the report said.

Argentina, Ukraine and Venezuela alone account for more than a third of that amount.

The situation is deteriorating rapidly, with 19 of the developing countries now effectively shut out of the lending market — 10 more than at the start of the year.

A third of all the developing economies have meanwhile seen their debt labelled as being "substantial risk, extremely speculative or default," UNDP’s chief economist George Gray Molina told Geo news.

The countries at the most immediate risk are Sri Lanka, Pakistan, Tunisia, Chad and Zambia, he said.

Steiner, who has repeatedly raised the alarm about the crisis, voiced hope the international community might finally recognise that action is in everyone’s shared interest.

"Prevention is better than treatment and certainly... much, much cheaper than having to deal with a global recession," he said.

UNI GNK。这条巨蟒体长4.5米，重达50公斤，此前饲养员发现它食欲下降、活动减少，检查确诊下颌位置长出恶性纤维肉瘤。2024年兽医完成肿瘤切除手术，但2025年肿瘤复发，不断侵蚀颌骨，蟒蛇几乎无法进食，生命岌岌可危。动物园兽医团队联合利物浦大学人类癌症研究专家，决定把人类临床使用的电化学疗法适配到蛇身上。治疗过程包含手术切除肿瘤与部分病变颌骨，再通过电脉冲配合化疗药物，精准杀伤残留癌细胞。由于蟒蛇体型过大，工作人员将两张手术台拼接成双人床大小的操作台，整场手术历时90分钟。术后复查显示，蟒蛇体内癌细胞已经完全消失，曾经连进食都困难的巨蟒，现已恢复捕食能力，能够直接生吞整鸡，行为模式回归正常。兽医表示，电化学疗法此前在部分爬行动物有零星尝试，但用于蛇类尚属全球首例，这次跨物种治疗成功，也为未来动物园珍稀爬行动物的肿瘤救治积累宝贵经验。