This interactive React and D3.js visualization displays global temperature anomalies from 1880 to 2023, comparing each year's deviation against the 1951-1980 baseline. The chart combines a dual-color area chart (red for warming, blue for cooling) with a trend line calculated via linear regression on data since 1980. Users can hover over data points for detailed tooltips and toggle climate event milestones, while summary statistics highlight the hottest and coldest years. Built with React 19, D3 v7, and NASA GISS data, the visualization uses `scaleLinear`, `area`, and `line` generators to render the animated data.