Daily Challenge

The most effective way to cut digital emissions is not one big decision but small habits that add up every day. Changing a streaming quality setting, turning off notifications for apps you do not use, deleting old emails: each looks small, but repeated over 365 days they add up to a real saving.

Habit-psychology research suggests that simply checking off a small action each day makes behaviour change last longer, because the small win of "I did one thing today" motivates the next day. This challenge applies that principle to cutting digital carbon.

Each challenge is designed to be done independently. Some days you might pick a streaming challenge, other days a file clean-up. What matters is steady participation, not perfection.

Challenges fall broadly into set-and-forget and recurring types.

• Set-and-forget challenges — such as capping streaming quality, turning off autoplay or reducing notifications. Once set, the effect continues automatically. Five minutes today can keep saving for hundreds of days.
• Recurring challenges — such as deleting old emails, clearing duplicate photos or removing unused apps. They only keep working if repeated regularly; a monthly calendar reminder helps you remember.

The estimated savings shown (kg CO₂) are reference values based on the same educational factors as our methodology. Actual savings depend on your devices and usage patterns.

Your streak of consecutive days is a good indicator of habit formation. A few tips to keep it going.

• Tie it to your routine — check the challenges with your morning coffee or before bed.
• Pick an easy one on hard days — on a busy day, choose something you can finish in 30 seconds.
• A broken streak is fine — if you miss a day, just start again. Restarting matters more than being perfect.
• Do it with family or friends — sharing the challenge with others keeps everyone motivated.