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Did You Know?
🧠 Psychology
😴
Total sleep deprivation can make your brain look 1–2 years older on MRI
1–2 yrs
Temporary increase in predicted brain age
🌿 Health
🌳
Just 20–30 minutes in nature can measurably lower stress hormones
20–30 min
Most efficient nature dose
📱 Technology
📱
Just having your smartphone nearby can lower attention performance
↓ Attention
With a phone present
💰 Economics
💸
Spending money on someone else can boost momentary happiness
712
Participants in the randomized experiment
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Latest Research

Recent studies

Psychology
✓Peer reviewed

Social Media Use and Its Impact on Adolescent Mental Health: An Umbrella Review of the Evidence

Patti M. Valkenburg, Adrian Meier, Ine Beyens · Current Opinion in Psychology · 2022 · Umbrella Review

An umbrella review of 25 reviews examining social media use and adolescent mental health. Most reviews characterized the associations as weak or inconsistent, while some reported more substantial negative associations.

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Climate
✓Peer reviewed

Estimated Mortality Attributable to the Urban Heat Island During the Record-Breaking 2022 Heatwave in London

Charles H. Simpson, Oscar Brousse, Clare Heaviside · Environmental Research Letters · 2024 · Greater London

During the July 2022 London heatwave, researchers estimated 370 deaths were attributable to heat, with about 38% of those heat-related deaths attributable to the urban heat island effect.

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💡 Did You Know
🚿
Ending showers with cold water was linked to 29% less sickness absence from work

In a randomized trial of 3,018 adults, finishing showers with 30 to 90 seconds of cold water reduced self-reported sickness absence, but did not reduce the number of illness days.

29%
Less sickness absence
Buijze et al. · PLOS ONE · 2016
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Neuroscience
✓Peer reviewed

The Effects of Total Sleep Deprivation on Cerebral Responses to Cognitive Performance

S. P. Drummond, G. G. Brown · Neuropsychopharmacology · 2001 · fMRI

Using fMRI, researchers examined how total sleep deprivation affected verbal learning, arithmetic, and divided attention. Brain activation changed differently depending on the cognitive task, suggesting the brain may recruit compensatory responses during sleep loss.

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Technology
✓Peer reviewed

D-BIAS: A Causality-Based Human-in-the-Loop System for Tackling Algorithmic Bias

Bhavya Ghai, Klaus Mueller · IEEE Transactions on Visualization and Computer Graphics · 2023 · Machine Learning

Researchers developed D-BIAS, an interactive system for detecting and reducing social bias in datasets using causal models and human input. Testing across three datasets found significant bias reductions with little data distortion and only a small loss in model utility.

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💡 Did You Know
✍️
Writing by hand produces more widespread brain connectivity than typing

EEG recordings from 36 university students showed more elaborate theta and alpha connectivity patterns while handwriting than while typewriting.

36
University students studied
Van der Weel & Van der Meer · Frontiers in Psychology · 2024
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Health
✓Peer reviewed

Association of Ultra-Processed Food Consumption With All Cause and Cause Specific Mortality

Zhe Fang, Sinara Laurini Rossato, Dong Hang et al. · BMJ · 2024 · Population-Based Cohort Study

Researchers followed more than 114,000 U.S. adults for over three decades. Participants with the highest ultra-processed food consumption had a slightly higher risk of all-cause mortality, although associations differed substantially by type of ultra-processed food.

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Economics
✓Peer reviewed

The Mental Health Effects of a Universal Basic Income: A Synthesis of the Evidence From Previous Pilots

Naomi Wilson, Shari McDaid · Social Science & Medicine · 2021 · Review

Researchers reviewed evidence from basic-income-style pilots in high-income countries. Studies involving unconditional payments generally reported improvements in mental wellbeing, including reduced stigma, greater hope for the future, and more time with family and friends.

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