🚨We need a massive awareness campaign for energy demand reduction🚨 Not just ‘drive less’…e.g. we spend BILLIONS £/$/€ a year creating light pollution. We could solve huge spend/energy/biodiversity problems by *literally tweaking the angle* of streetlights/“security” lights.

It's International Dark Sky Week Apr 22-30! More info about events to observe and celebrate our dark skies at https://t.co/u8q4nEomwv Making your skies darker: https://t.co/cRE8WIM5sw

This year’s star count by the Campaign to Protect Rural England @CPRE is happening right now! Have a look at what’s involved and take part: https://t.co/4WOprrY2lR #lightpollution #darkskiesnow

Does a nightlife culture have to waste precious renewable energy? (Photo: Royal Exchange Square, Glasgow, Wikimedia)

In the climate emergency, the dream of a 24/7 society conflicts with reduced emission targets. Night-time commerce is inefficient because it needs extra light, heat and services. So why not reserve precious renewable energy for essential and domestic use? #COP26 #uselightwisely

(This photograph from Melvyn Taylor shows an example of bad lighting leading to wasted energy and needless CO2 pollution. It is far too bright, badly aimed and may also be a dazzling hazard to road users.)

The world must reduce CO2 emissions URGENTLY! 80% of energy still comes from fossil fuels. Until renewables take over, wasting any energy is hard to justify. Every gm of CO2 counts. Artificial light uses energy which causes CO2, so we at the CfDS say #USELIGHTWISELY. #COP26

Is Government serious about climate change? One contribution towards tackling climate change is to control wasteful lighting. We need light at night, but only when and where required. Positive action on light pollution will show that government cares. #USELIGHTWISELY #COP26

#USELIGHTWISELY (The orange glows at the edge of this all-sky photograph shows one thing - wasted energy! It was taken from the Wiltshire countryside at the end of the last century, before the age of the LEDs. The image was made by our friend Mike Tabb, who is greatly missed.)

#COP26 Light pollution is energy waste made visible. The glow that hangs over cities, glaring over-bright lights on houses, car parks, factories is the veil of wasted light that hides the stars at night. Most outdoor lights are too bright and too white. #USELIGHTWISELY

#COP26 begins TODAY! Fixing #lightpollution would be a quick win for the fight against #ClimateEmergency, government debt, worsening public health and #biodiversitycrisis. Light pollution wastes BILLIONS in energy every year, directly harming wildlife + humans. Support our work!

Ahead of #COP26, please read and share our leaflet "Light Pollution and Health". Light pollution wastes BILLIONS in energy every year, and particularly due to new blue-rich light, is a direct contributor to #biodiversity loss. #climatechange #lightpollution Read more:

Our free hour-long talk shows why combatting #lightpollution is so important for #biodiversity, #energyefficiency and saving taxpayer £££. #astronomy #darkskies Website: https://t.co/eO7DKaYnHM https://t.co/9xBnu1gx5F

Come to our free online event TOMORROW: How to save the stars! With the UK's foremost light-pollution campaigner, and astronomer, Bob Mizon MBE. https://t.co/jGBRGwuStH

The British Astronomical Association's Commission for Dark Skies ( https://t.co/cS9n4EfJkQ) supports the APPGDarkSkies. We need to regain the natural night for all Earth's life through star-quality lighting. The existence of the APPGDark Skies is a big step towards this.

https://t.co/vRtifLhw9g

On Thursday 7th June @NottinghamAstro welcomes Bob Mizon to give a talk on @cfds_uk 'Dark Future? - what future for Britain's darkest skies'. Join us for refreshments from 7.30pm at Gotham Hall. The talk will start at 8pm. Non-Members are most welcome.

@cfds_uk This is what it’s like outside our house at 00:30 thanks to @Hillingdon recently adding to the light pollution in my road. It’s basically day time out there. #lightpollution

Officially awarded International Dark Sky Reserve status in 2012, Wales’ Brecon Beacons National Park is one of the best places for #Stargazing in Wales 🌙✨ > https://t.co/joXHrq5tbp #DarkSkyPark @BreconBeaconsNP @cfds_uk @IDADarkSky

Did you know Galloway Forest Park is one of Britain’s best #Stargazing destinations and was the first to be designated as an official International #DarySkyPark? 🌙✨ > https://t.co/joXHrq5tbp @darkskyobs @cfds_uk @IDADarkSky #NightSky