Possible unease over climate model stretching
There is a big government launch on Thursday of research showing the possible impacts of climate change here in the UK, looking out towards the end of the century.
It is Environment Secretary Hilary Benn's day. His aim is to show us all what might lay ahead for our children, depending on how successful we are at cutting back greenhouse gas emissions.
Some might say to "worry" us into changing our behaviour.
This is an update on similar research from seven years ago, both spearheaded by the Hadley Centre's climate change team.
This time round there will be an interactive website for consumers, so we can all find out about the likely warmer, wetter winters or hotter, drier summers where we live.
The scientists have apparently divided up the UK into a grid of 25km (16 mile) squares.
The only trouble is that by offering up such a fine grid as this, instead of the region-by-region break down of 2002, there is necessarily less certainty about the changes that might be felt in each square.
The head of climate change at the Hadley Centre, Vicky Pope, tells me this larger uncertainty is "reflected" in the results.
She may find she struggles to get this across later on Thursday.
She told me the grid is designed to help satisfy "users", such as insurers who deal in say the risk of extra flooding, or local planners deciding where to build schools and hospitals.
But she also concedes that using climate models in this way necessarily stretches them as far as they can: "so there will be some unease", she says.
There may be even more unease tomorrow, when the Environment Agency publishes its strategy on current flood risks, and what it is going to cost to cope with climate change.