The global pulse.

Where this atlas documents environmental issues, by category and severity. The Pulse shows the presence and density of documented issues — it reflects what TerraLens covers, not a measurement of global prevalence.

Category

Minimum severity

Issues shown: 9
Places: 9

Air: Air quality, particulate pollution and atmospheric emissions affecting human health.

Severity distribution · Air

Low0
Moderate3
High3
Critical3

Documented issues by category

Places · most severe first

LahoreSeverity: Critical
- Winter smog in Lahore
DelhiSeverity: Critical
- Delhi's winter air pollution
DhakaSeverity: Critical
- Air pollution in Dhaka
JakartaSeverity: High
- Urban air pollution in Jakarta
Mexico CitySeverity: High
- Ozone pollution in Mexico City
Los AngelesSeverity: High
- Smog in the Los Angeles basin
BeijingSeverity: Moderate
- Beijing's air pollution control
BogotáSeverity: Moderate
- Air quality and transport in Bogotá
LondonSeverity: Moderate
- Traffic pollution and the Ultra Low Emission Zone in London

Severity is descriptive editorial metadata summarising documented effects. It is not a measured index or a score.