Creator

Daniel Okafor

Trusted creator

Data journalist covering technology and global development.

5 publishedJoined Aug 14, 2026

Line chart of monthly atmospheric CO₂ at Mauna Loa from 1958 to 2026, rising with a seasonal saw-tooth pattern from about 315 to 429 parts per million.

Climate

Carbon dioxide keeps climbing

Monthly CO₂ in the atmosphere, measured at Mauna Loa, Hawaii — the famous “Keeling Curve.” It has risen from about 315 parts per million in 1958 to around 430 today, climbing in every single decade.

Daniel OkaforAug 31, 2026

Stacked area chart of wind and solar as a share of world electricity, 2000 to 2025, rising from 0.2% to about 17%. In 2025 solar is 8.8% and wind 8.5%.

Climate

Wind and solar reached one-sixth of world electricity

Share of the world's electricity generated by wind and solar, 2000 to 2025. It has climbed from a rounding error to about one-sixth — and in 2025 solar edged past wind for the first time.

Daniel OkaforAug 26, 2026

Log-scale line chart of lithium-ion battery cell prices in constant 2024 dollars, falling from about $9,210 per kilowatt-hour in 1991 to $78 in 2024, with a small uptick in 2022.

Climate

Batteries got 99% cheaper

The price of lithium-ion battery cells has fallen from about $9,200 per kilowatt-hour in 1991 to under $80 in 2024 (in constant 2024 dollars) — the quiet engine behind cheap solar storage and electric cars.

Daniel OkaforAug 24, 2026

Column chart of the share of the world's population in extreme poverty (below $3.00 a day, 2021 prices): 43% in 1990, 36% in 2000, 21% in 2010, 13% in 2015 and 11% in 2022.

Economy

Extreme poverty is retreating

The share of the world living on less than $3 a day (2021 prices) has fallen from about 43% in 1990 to roughly 11% — from more than four in ten people to about one in nine.

Daniel OkaforAug 19, 2026

Dumbbell chart comparing the share of people using the internet in 2000 and 2023 for eight countries: South Korea 45%→97%, United States 43%→94%, Germany 30%→92%, China 1.8%→91%, Brazil 2.9%→84%, Indonesia 0.9%→69%, India 0.5%→60%, Nigeria 0.1%→40%.

Technology

The world came online

Share of people using the internet, 2000 vs 2023. Two decades ago most of these countries were barely online; today, majorities in all of them are connected.

Daniel OkaforAug 17, 2026