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After decades near collapse, humpback whales are resurging — from an estimated 10 000 at their lowest, to around 80 000 today. Conservation efforts and the whales’ flexible feeding behavior helped them recover. Researchers now spot them almost daily in former near-deserts of the sea.
(c) Marlin Clark
(c) Marlin Clark
  • 2 Disemba 2025

Nyangumi wa humpback wanafufuka: idadi inaongezeka hadi ~80 000

PHYS

Baada ya karibu kutoweka, nyangumi wa humpback sasa wamepona — kutoka takriban 10 000 hadi ~80 000. Jitihada za kuhifadhi na uwezo wao kubadilika lishe zimekuwa kiini. Wanasayansi sasa wanaona nyangumi karibu kila siku mahali waliopotea zamani.

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Researchers at RMIT University created biochar from used coffee grounds, replacing part of the sand in concrete. The result: up to 30% more strength and a carbon footprint cut by up to 26%. Real-world footpath trials are already underway — waste coffee becoming sustainable infrastructure.
Previous Makala Taka ya kahawa yaboresha beton na kupunguza athari zake kwa mazingira

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Scientists monitoring the ozone layer report that the hole above Antarctica has reduced to its smallest measured size since 2019. Thanks to favourable weather and lower ozone-depleting emissions, the drop could mean a healthier atmosphere and milder ultraviolet exposure for southern latitudes — good news for people and ecosystems alike.
(c) Gatis Marcinkevics

Shimo la ozoni juu ya Antaktika limeshuka hadi kiwango kidogo tangu 2019

  • 2 Disemba 2025
Two 19-year-old college students from Portugal have created Trovador — a six-legged, AI-enabled robot that can navigate rugged terrain and replant trees in wildfire-scorched hills. It plants up to 200 saplings per hour, achieves 85–90 % survival in trials, and could revive forests where humans and machines can’t reach.
(c) Karsten Winegeart

Vijana wabuni roboti inayo rejesha misitu kwenye milima iliyochomwa

  • 2 Disemba 2025
Researchers at the University of Cologne have discovered a powerful antibody — 04_A06 — that neutralizes around 98.5 % of over 300 tested HIV strains. In lab experiments the antibody reduced viral load to undetectable levels — a major step toward broad-spectrum therapies for prevention and treatment worldwide.
(c) Antirudh

Hatua Kubwa Dhidi ya HIV: Antibody Yanaweza Kuzuwia Karibu Tano Nzima ya Virusi

  • 2 Disemba 2025

Iliyosomwa Zaidi

A recent Carbon Brief study shows China’s carbon dioxide emissions have remained unchanged or declined for 18 straight months, thanks in part to a surge in solar (+240 GW) and wind (+61 GW) capacity and a 5% drop in transport emissions.
Uchambuzi: Upepo wa uzalishaji wa CO₂ wa China umekaa au kupungua kwa miezi 18
Scientists at TU Wien have developed a non-toxic “deep-eutectic” solvent that separates blended fabrics — like cotton-polyester mixes — within minutes. Cotton stays intact and polyester is recovered almost fully, offering a near-complete recycling method for textiles that were once nearly impossible to reclaim.
Solvent Mpya Isiyo Toksikoi Inaweza Kuleta Mapinduzi katika Urecycle wa Vazi
At COP30 in Belém, Brazil officially created ten new Indigenous territories, including some overlapping Amazon National Park. The move, issued via presidential decree, adds legal protection to lands of groups like the Munduruku and Guarani-Kaiowá during a summit marked by protests.
Brasil yazingatia Hekima ya Asili: Inaweka Hifadhi 10 Mpya za Watu wa Asili
Researchers at the University of Cologne have discovered a powerful antibody — 04_A06 — that neutralizes around 98.5 % of over 300 tested HIV strains. In lab experiments the antibody reduced viral load to undetectable levels — a major step toward broad-spectrum therapies for prevention and treatment worldwide.
Hatua Kubwa Dhidi ya HIV: Antibody Yanaweza Kuzuwia Karibu Tano Nzima ya Virusi
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