Hitchhiking frog article hopped over a crucial detail | Brief letters

Animal welfare | Nuclear fusion | Atomic waste | Managing investments | What's in a name?

While I am, of course, concerned about the risks posed to the UK's delicate biosystem by the inadvertent importing of harmful fauna and flora from foreign countries, your article (Colombian tree frog found by Sheffield florist highlights invasive species threat, 17 January) left a vital question unanswered. What happened to the little tree frog?
Sallyann Halstead
Fitzhead, Somerset

Intrigued to read about the government promising a record investment in nuclear fusion (Ministers pledge record 410m to support UK nuclear fusion energy, 16 January). Reminds me of the old joke: fusion, for the last 70 years, has always been 20years in the future - perhaps an experiment to prove time doesn't exist in nuclear physics?
Dr Paul Dorfman
Chair, Nuclear Consulting Group