University of Cambridge graduate Jack Merritt, described by his father as a "beautiful spirit", was one of two people killed by Usman Khan.
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One of Europe's largest dolphin populations needs special protection, say scientists measuring marine pollution.
Preliminary figures suggest last month's global temperatures equalled or narrowly beat the previous record.
A heatwave that last week gripped Europe and sent the mercury soaring, causing record temperatures in several countries, has now settled in Greenland and the results are startling.
Northern France is on red alert and records across the UK and Western Europe could be broken again.
Kleine Brogel in Belgium hits 38.9C (102F) and a Eurostar train breaks down in searing heat.
The French city of Bordeaux hits its highest temperature since records began with 41.2C (106.1F).
Much of Germany's power is still made by burning coal. Activists have occupied a forest in protest.