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Manta rays create mobile ecosystems, study finds

A new study from the University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science and the Marine Megafauna Foundation finds that young Caribbean manta rays (Mobula yarae) often swim with groups of other fish, creating small, moving ecosystems that support a variety of marine species.

The paper is published in the journal Marine Biology.

South Florida —particularly Palm Beach County—serves as a nursery for juvenile manta rays. For nearly a decade, the Marine Megafauna Foundation has been studying these rays and documenting the challenges they face from human activities near the coast, such as boat strikes and entanglement in fishing gear, which can pose significant threats to juvenile mantas.

The Coming Ecological Cold War

But the report was also marked by the flaws of its technocratic conception. Crucially, the broader stakes of the global energy transition went ignored. This is a mistake in urgent need of correction. The decarbonization agenda is not simply about reordering markets or industrial policies, but in fact represents the crucible for a new geopolitical order.

Four years ago, the International Energy Agency (IEA) published a landmark report, “Net Zero by 2050: A Roadmap for the Global Energy Sector,” that proposed a technical blueprint for a global green energy transition by the middle of this century. The report focused on the economic and technological dimensions of this energy transition. It was an admirable effort that calls for careful study.

New framework reveals where transport emissions concentrate in Singapore

Compact, mixed-use districts are often assumed to naturally produce cleaner travel patterns, but the reality on the ground is far more complex.

In Singapore, for instance, two adjacent employment hubs—One-North and Science Park—share similar locations but differ sharply in how people move through them.

A new study from the Singapore University of Technology and Design (SUTD) reveals why and offers a high-resolution approach to understanding where emissions accumulate within districts rather than across entire cities.

Head and Neck Cancer

Head and neck cancer is the seventh most common cancer worldwide. In 2024, approximately 58 450 individuals were diagnosed with oral cavity and pharynx cancer and 12 650 were diagnosed larynx cancer in the US.

Although many malignancies originate in the head and neck region, the term head and neck cancer typically applies to tumors arising in the lining or mucosa of the upper aerodigestive tract. Approximately 90% of head and neck cancers are caused by squamous cell carcinoma.

This Review summarizes the epidemiology, pathophysiology, clinical presentation, diagnosis, and treatment of head and neck squamous cell carcinomas (HNSCC) of the upper aerodigestive tract.

This review examines the epidemiology, risk factors, clinical presentation, diagnosis, and treatment of head and neck squamous cell carcinomas of the upper aerodigestive tract.

Nvidia unveils new open-source AI models amid boom in Chinese offerings

Nvidia on Monday revealed the third generation of its “Nemotron” large-language models aimed at writing, coding and other tasks. The smallest of the models, called Nemotron 3 Nano, was being released Monday, with two other, larger versions coming in the first half of 2026.

Nvidia, which has become the world’s most valuable listed company, said that Nemotron 3 Nano was more efficient than its predecessor — meaning it would be cheaper to run — and would do better at long tasks with multiple steps.

Nvidia is releasing the models as open-source offerings from Chinese tech firms such as DeepSeek, Moonshot AI and Alibaba Group Holdings are becoming widely used in the tech industry, with companies such as Airbnb disclosing use of Alibaba’s Qwen open-source model.

US develops method to spot illegal nuclear material origins in 30 mins

A simple instrument like mass spectrometer can revolutionize how unknown samples are investigated in the future.

A new method developed by researchers at the Los Alamos National Laboratory (LANL) can spot the origins of illegal nuclear material in just 30 minutes. Requiring only a relatively simple instrument, such as a mass spectrometer, the method can help identify the source of any nuclear material outside regulatory control.

According to the International Atomic Energy Agency (IAEA), theft or improper disposal can result in nuclear and radiological material falling out of regulatory control. In 2,024,124 such incidents were reported to the IAEA, of which at least three were linked to “trafficking or malicious use”

Earlier this year, a leader of a crime syndicate pleaded guilty to trafficking nuclear material in a New York court. The accused had discussed sale of yellowcake uranium with an undercover agent.

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