ITER, the international fusion experimental reactor, will not be completed in 2025 as previously announced. It will be a decade or more late for its goal of making some experiments possible.

This is sad, but it doesn't really change the situation. If fusion power ever works, it will be decades too late to help avoid global heating disaster. We can keep the research going, but our plan to curb global heating should ignore nuclear fusion.

It must also ignore nuclear fission. Although fission reactors do work, they are so expensive that the main effect of building one is to waste the money we could have used to build more solar and wind power.

Unsupervised reintroductions into Britain of butterflies that have to be brought from other countries risk bringing their diseases and pests too. It is well-meaning but dangerous practice.

Killarney park, Ireland's largest national park, has suffered ecological disaster from invasive species. No new trees can succeed in growing there under present conditions. To correct this will require persistent effort.

Perhaps in a few decades it will be possible to develop biological killers that, when released, would eradicate rhododendron and sika deer in Ireland while being somehow unable to spread elsewhere. But that is just speculation. In the absence of that, the eradication of rhododendron will have to be done manually without cease.

US arms companies are sponging more on the US treasury and spending less on research and development.

The EU accuses Google of taking unfair advantage of running advertisement auctions with favoritism towards Google's own ad generation.