Science Daily

Giant prehistoric insects didn’t need high oxygen after all, study finds

Ancient Earth once buzzed with enormous dragonfly-like insects, and scientists long thought high oxygen levels made their size possible. A new study overturns that idea, revealing insect flight ...
IEEE

Diffusion-Augmented Graph Contrastive Learning for Knowledge-Aware Recommendation

Abstract: Knowledge graph (KG) contrastive learning (CL) has garnered significant attention in the realm of recommendation systems. However, existing models often employ random masking for graph ...
MacRumors

iOS 26.4 Adds Average Bedtime Metric and Restores Blood Oxygen to Health App Vitals Graph

In iOS 26.4, Apple added an Average Bedtime metric to the Sleep section of the Health app, letting users better monitor how bedtime impacts sleep quality. Under a new Sleep Highlight, Apple lists the ...
Science Daily

A breakthrough that turns exhaust CO2 into useful materials

Scientists have created a device that captures carbon dioxide and transforms it into a useful chemical in a single step. The new electrode works with realistic exhaust gases rather than requiring ...
EurekAlert!

Ultrathin porous NiO nanosheets with oxygen vacancies boost photocatalytic CO2 reduction

The rapid increase in global industrialization over the past few centuries has resulted in the disposal of excessive CO 2 into the atmosphere, leading to serious environmental issues such as the ...
The Conversation

Where America’s carbon dioxide emissions come from – what you need to know, in charts

Earth’s atmosphere contains carbon dioxide, which is good for life on Earth – in moderation. Plants use CO 2 as the source of the carbon they build into leaves and wood via photosynthesis. In ...
PBS

Trump moves to end NASA missions measuring carbon dioxide and plant health

The Trump administration is moving to shut down two NASA missions that monitor a potent greenhouse gas and plant health, potentially shutting off an important source of data for scientists, ...
NPR

Why a NASA satellite that scientists and farmers rely on may be destroyed on purpose

The Trump administration has asked NASA employees to draw up plans to end at least two major satellite missions, according to current and former NASA staffers. If the plans are carried out, one of the ...
ucdavis.edu

Massive Burps of Carbon Dioxide Led to Oxygen-less Ocean Environments in the Deep Past

A new study of sediment cores shows a series of massive emissions of carbon dioxide over a 20 million year period about 300 million years ago. These CO2 emissions happened at the same time as drops in ...
Phys.org

Carbon dioxide removal methods could worsen marine oxygen loss, study warns

Methods to enhance the ocean's uptake of carbon dioxide (CO₂) are being explored to help tackle the climate crisis. However, some of these approaches could significantly exacerbate ocean deoxygenation ...
IEEE

Medical Graph Diffusion: Hybrid Graph Diffusion With Heterogeneous Graph Convolutional Networks for Medical Text Classification

Abstract: Text classification is a critical task for understanding the knowledge behind text, especially in medical text. In this paper, we propose a medical graph diffusion model, named the MGD model ...