If nothing else, this should worry smokers: the radiation dose from radium and polonium found naturally in tobacco can be a thousand times more than that from the caesium-137 taken up by the leaves from the Chernobyl nuclear accident.
The Scottish National Party's new Rural Affairs Secretary, Richard Lochhead, is coming under mounting pressure this weekend not to cave in to farmers by depriving environmental schemes of funding.
The SNP Cabinet is due to decide future levels of investment in rural development this week amidst fears that ministers are preparing to limit the money available to projects designed to protect wildlife, improve water quality, and combat climate change.
Ever wondered how many planets your lifestyle requires? Today, with the launch of a new carbon footprint calculator, you can find out.
The environmental group WWF Scotland is putting online what it regards as the best ecological footprint estimator available. After a five-minute survey, people learn how many planets are needed to sustain the energy and resources they use.
Amidst all the palaver over the UK government's energy policy paper backing a new programme of nuclear power stations on Wednesday, one significant shift has so far been missed. Buried away on page 204 is a change that will give anti-nuclear campaigners some crumbs of comfort.
"The Government has concluded," it says, "that any nuclear power stations that might be built in the UK should proceed on the basis that spent fuel will not be reprocessed." This is the clearest statement so far of ministers' intention to abandon the decades-old policy of reprocessing uranium burnt in reactors.
UK ministers have ended a 20-year standstill on nuclear power by giving the go-ahead to a new generation of reactors to help cut the pollution that is disrupting the climate.
And the government has given the first indications of where up to 10 nuclear stations are likely to be built, at a cost of £1.2 billion ($2.4 bn) each. An expert report identifies the best sites as being next to existing reactors around the south coast of England, with Hinkley Point in Somerset and Sizewell in Suffolk topping the list.
The new Scottish parliament is heading for a confrontation with Gordon Brown's government in Westminster over new nuclear power stations, plans for which are due to be unveiled this week.
A survey of the MSPs elected to Holyrood this month reveals that a clear majority are opposed to the building of any more reactors in Scotland. MSPs who say they are against nuclear power outnumber those who said they are in favour by three to one.
Major job cuts are planned by the National Trust for Scotland (NTS) in a bid to save £3 million, after recent years have seen the charity hit by financial losses and poor visitor numbers.
In a statement given to the Sunday Herald, NTS officials said they were at the "early stages of a reorganisation and a review of operations" and that the cuts were necessary to ensure a "sustainable future". It added that as staff costs represent half of total costs, then staff numbers would have to be reduced.
Hopes are rising that a UK government campaign could help swing the world back in favour of a ban on commercial whaling at a crucial meeting in Alaska later this month.
The Blair government has helped recruit new countries to the International Whaling Commission (IWC) with the aim of overturning last year's narrow vote backing whaling. Croatia, Slovenia, Cyprus, Greece and Ecuador have all joined up in recent months.
Seventeen major industrial sites across Scotland have been outed by the government's environment watchdog for failing to curb pollution risks.
The companies with the poorest performances in 2006, named by the Scottish Environment Protection Agency (Sepa), include five meat processing factories, three chemical plants, two landfill sites, a hospital incinerator, a timber mill and a new biodiesel plant.
Taxpayers could be lumbered with a large legal bill because Scotland's environment watchdog is allowing over 200,000 tonnes of sewage sludge to be illegally burnt in a polluting power station.
A secret Scottish Executive memo, leaked to the Sunday Herald, reveals that the Scottish Environment Protection Agency (Sepa) has made a deal which enables sludge to be incinerated at Longannet power station for four years in breach of European law.
Pollution from one of Scotland's major glass recycling operations has provoked a storm of protest from the surrounding community who fear for their health.
The worries of residents living near a glass crushing plant at Bonnyrigg in Midlothian have been backed by their local MSP, and prompted investigations by the Scottish Environment Protection Agency (Sepa). But the UK waste company that runs the plant, Viridor, insisted that the pollution was harmless and that incidents had been "sporadic".