Climate Survival Tech
EARTH HEAT WATCH
FIELD GUIDES

Beat the heat
one problem at a time.

Every guide answers one question, cites its sources, and names the gear that helps. Prices show on Amazon at click time, in your local store where one exists.

PERSONAL

Personal · GUIDE Do neck fans work? They move air over the most blood-rich skin you have, a real effect with real limits. Where neck fans genuinely help, and where they turn into jewellery. UPDATED 6 JUL 2026 Personal · GUIDE Keep a laptop cool in a heatwave Laptops throttle and crash in the same weather people do. Why heat cuts performance, and the cheap fixes that keep a machine quick through summer. UPDATED 6 JUL 2026

HOME

Home · GUIDE Blackout curtains vs window film Film turns solar heat away at the glass all day. Curtains give darkness on demand and help in winter. Which your windows need, and when to run both. UPDATED 6 JUL 2026 Home · GUIDE Evaporative cooler vs fan A fan helps in any climate. An evaporative cooler beats it in dry air and loses in humid air. The dividing line is humidity, drawn here with numbers. UPDATED 6 JUL 2026 Home · GUIDE How to cool a room without AC Block the sun before it lands, vent hard after dark, then use fans and evaporation properly. Done in the right order, a room can sit well below the street. UPDATED 6 JUL 2026 Home · GUIDE Portable AC vs evaporative cooler One refrigerates a sealed room and drinks electricity. The other sips power and only works in dry air. Which box to buy depends on humidity, budget and your window. UPDATED 6 JUL 2026

SLEEP

Sleep · GUIDE Do cooling mattress toppers work? Gel toppers really do pull heat away from your skin, and they really do stop working miracles after the first hour. What the cooling claims mean and who benefits. UPDATED 6 JUL 2026 Sleep · GUIDE How to sleep in extreme heat Heat wrecks deep sleep before it wakes you. Prep the room all day, cool the body before bed, keep air moving, and pick bedding that sheds heat. UPDATED 6 JUL 2026

POWER

Power · GUIDE Build a heatwave power outage kit Heatwaves strain the grid on the days you can least afford to lose it. A kit that keeps people cool, phones alive and water cold when the sockets go quiet. UPDATED 6 JUL 2026

HYDRATION

Hydration · GUIDE Electrolytes for heat explained Most hot days need nothing fancier than water and food. Long sweaty hours are different. What electrolytes do, when they matter, and when to skip them. UPDATED 6 JUL 2026