Interesting Links for 16-05-2026

[andrewducker]

1. Edinburgh Castle paths reopen after eight years but high-risk routes closed for good

(tags:Edinburgh castle walking Scotland )

2. Running the numbers on a zero-emission way to make cement

(tags:cement materials co2 electricity )

3. Hantavirus 'can remain in semen for six years' and can be sexually transmitted

(tags:disease sperm virus )

4. CWU votes to support PR: four of 'big five' Labour-affiliated unions now back electoral reform

(tags:voting reform UK unions Labour )

Comments

[armiphlage]

2. Leaching calcium hydroxide from other rocks can become even cheaper as the grid becomes more renewable. At noon, solar output may be greater than demand; at night, wind output may be greater than demand. You can use small amounts of electricity to constantly run pumps trickling acid over a pile of gravel, but only regenerate your acid when electricity is cheapest.